Evaporitic Karst and Caves of Northern Apennines

Country
Italy
Inscribed in
2023
Criterion
(viii)
The conservation outlook for this site has been assessed as "good with some concerns" in the latest assessment cycle. Explore the Conservation Outlook Assessment for the site below. You have the option to access the summary, or the detailed assessment.

This serial property is an unusually well-preserved and extensive epigenic gypsum karst terrain. It includes a very high density of caves: over 900 caves in a relatively small area, with over 100 km of caves in total. It is the first and the best studied evaporitic karst in the world, with academic work beginning in the 16th century. It also includes some of the deepest gypsum caves in existence, reaching 265 meters below the surface. © UNESCO

©IUCN/Gordana Beltram

Summary

2025 Conservation Outlook

Finalised on
11 Oct 2025
Good with some concerns
The conditions of integrity of the OUV are good and stable. The concerns related to the overall protection and management stem from the lack of legal protection for some components of the property, and a complex management system that is not yet developed for the entire property.

Current state and trend of VALUES

Good
The property was inscribed in 2024 and the status and trend reflect conditions at the time of inscription.

Overall THREATS

Low Threat
The threats are well defined with specific measures to address them. The current threat of mining is likely to cease if the permit for the operation is not renewed. The threat of increased visitation is likely to be addressed through a visitation management plan and implementation.

Overall PROTECTION and MANAGEMENT

Mostly Effective
The legal framework, governance arrangements, integration into local, regional and national planning systems, boundaries, and law enforcement all raise some concern for protection and management. These stem from the lack of legal protection for some components of the site, and a complex management system that is not yet fully developed. The management system consists of two management bodies. The component part of Alta Valle Secchia is managed by the Appennino Tosco-Emiliano National Park. All other component parts are under the control of the Emilia-Romagna Region, which directly supervises the management bodies of the regional protected areas. These management bodies have a management plan, a specific budget and dedicated staff (technical and administrative) to manage and control the respective areas.

Full assessment

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Description of values

Two important periods in Earth history

Criterion
(viii)
The nominated property encompasses two different geological periods during which evaporitic rocks were deposited: Firstly, the Triassic period (200 million years ago) associated with the breakup of the supercontinent Pangea and formation of the modern continents as well as the formation of the Atlantic and Indian ocean basins, and secondly, the ecological catastrophe known as the Messinian Salinity Crisis phase (6 million years ago), when the Mediterranean Sea largely evaporated. Over the last c.500,000 years the current cave system developed within these formations. (IUCN, 2023)

Extensive epigenic gypsum karst terrain

Criterion
(viii)
The nominated property is an unusually well-preserved and extensive epigenic gypsum karst terrain. It includes a very high density of caves: over 900 caves in a relatively small area. There are over 100 km of caves in total, including the 11.5 km long Spipola-Aquafredda-Prete Santo cave system and the 7 km long hydrogeological tunnel system. It also includes some of the deepest gypsum caves in the world reaching 265 meters below the surface. (IUCN, 2023)

First and best studied evaporitic karst in the world

Criterion
(viii)
The Evaporitic Karst and Caves of Northern Apennines are the first and the best studied evaporitic karst in the world, with academic work beginning in the 16th century. The features are accessible, well preserved, and readily understandable. These studies have had many iconic contributions to understanding of evaporitic karst, including their record of climate evolution over the last hundred thousand years, and their lessons to support our understanding of climate change in the future. This evaporitic karst and cave terrain has played a key role in the development of geology, speleology, mineralogy and hydrogeology. The site also contributed to the understanding of the use of evaporitic deposits as building materials: almost 2,000 years ago some of the natural caves were used by the Romans for the extraction of stunning transparent crystals to be used in window frameworks
instead of glass. (IUCN, 2023)

Large diversity of chemical deposits, minerals, and fossils.

Criterion
(viii)
The nominated property contains an unusually large diversity of chemical deposits and minerals associated with gypsum deposits and gypsum caves. Some of these minerals are found nowhere else, and no other area has, as yet, documented the same mineral diversity. The nominated property also contains many noteworthy and unique hydrological features and surface karst forms, including hypogean bends, very large gypsum cone features, salt springs, and
speleothems. The paleontological values include gypsum strata with evidence of surface exposure, leading to the development of ancient intra-Messinian karst features containing one of the most important Late Miocene continental faunae in the world. (IUCN, 2023)
Biodiversity
Biodiversity is also an important value; for example, bat colonies in caves, species and habitat diversity of importance at national and European level,
with some endemic and rare species. The Northern part of the property (component parts of Alta Valle Secchia and Bassa Collina Reggiana) is also part of the Appennino Tosco-Emiliano Biosphere Reserve which could also be extended to include the larger area of the nine component parts of the property.
Cultural significance
There are several cultural values of component parts that provide additional value to the area. Most of these are directly or indirectly linked to gypsum use, karst and caves research, and archaeological sites preserving spiritual and burial grounds (IUCN, 2023).

Assessment information

Low Threat
The current threat of mining is likely to cease if the permit for the operation is not renewed. The threat of increased visitation is likely to be addressed through a visitation management plan and implementation.
Mining & Quarrying
(Continued quarrying at active mine)
High Threat
Outside site
The primary threat to the property is continued quarrying of gypsum. Quarrying is now prohibited by law with the exception of the Monte
Tondo quarry, which is located in the buffer zone, but may affect the cave system, in particular the Re Tiberio cave (IUCN, 2023). The quarry currently operates under the permit issued by the regional administration. Currently, the company would like to renew the permit that has expired (IUCN, 2023).
Recreational Activities
(Increased tourism visitation)
Low Threat
Inside site
, Widespread(15-50%)
Six caves are open to the public. The site is close to large towns and is popular for local weekend visitation. With the increase in tourism from inscription, there is a threat to the condition of the gypsum karst (IUCN, 2023).
Involvement of stakeholders and rightsholders, including indigenous peoples and local communities, in decision-making processes
Mostly Effective
The degree of consultation with the 37 stakeholder groups and their participation in decision-making appeared to be effective and there was a high degree of support for the inscription. The management structure of the protected area is complex owing to the different levels of protection, and different management agencies, both national and regional for the component parts. This complexity will likely make community inclusion challenging. A local farmers association spoke out about lack of engagement and the potential impact of the inscription on their current activities. A trade union representing workers at Monte Tondo quarry is also concerned that the nomination would adversely affect them (IUCN 2023).
Legal framework
Some Concern
All of the component parts have protection status equivalent to IUCN Category IV, and Alta Valle Secchia (nominated component part 1) is also partially protected by a national park (IUCN Category II). Ninety-six percent of the nominated property is protected by the European Union’s Natura 2000 network. Seventy percent is protected by a national park and by two regional parks. Most of the remaining areas are nature reserves and protected landscapes, preserved by local law. The buffer zone and the land
adjacent to the property is subject to the territorial and landscape planning of the Emilia-Romagna Region that establishes the legal framework for the management of the territory. The State and the Emilia-Romagna Region have passed and implemented legislation and management that provides adequate legal protection to the gypsum areas in the Northern Apennines. The overall protection system is complex. One factor adding complexity is that more than half of the area of the component parts is privately owned and not under direct State or Regional responsibility. Private ownership ranges up to 98% in some component parts of the serial site. Although the national legislation (Italian Civil Code) specifies that the waters, minerals, crystals, fossils, archaeological finds and antiquities belong to the State, the potential for private landowners to modify the property in ways that may degrade the proposed Outstanding Universal Value is unclear. In addition, some important areas (see section 4.2) with specifically identified attributes are not covered by any legislative or regulatory protection, including parts
of the component part of Alta Valle Secchia. Whilst the unprotected areas of Alta Valle Secchia are situated within the Appennino Tosco-Emiliano Biosphere Reserve, they are found in the buffer zone or transition zone of the Reserve and are not specifically protected for their geological values. The Biosphere Reserve’s concern for geological values is mainly centred on educational aspects of geo-conservation rather than protection. The same also applies, to a greater extent, to the buffer zone of the component part of Alta Valle Secchia, and to a small extent to the buffer zone of the three component parts of Vena del Gesso Romagnola. Therefore, the property and buffer zone would not be protected in their entirety by the legal framework as required by the Operational Guidelines, especially by paragraphs 96-99, 101-102 and 104. (IUCN, 2023).
Governance arrangements
Some Concern
The State Party has drafted a structure of governance and management for the nominated property, and an office at the local level to coordinate all the partners included in the serial nomination is to be established as part of the General Directorate for Land Care and Environment. The proposed Overall Management Strategy provides a fair basis for the future structure and shared responsibilities between the regional and the national administration and among the 37 involved stakeholders. Although protection through different legislative and management programs are covering most of the property, there remain gaps in protection within the property and for important attributes of the OUV. The complexity of the system of protection is considerable and would benefit from a single unified protection system for the component parts of the property (IUCN, 2023).
Integration into local, regional and national planning systems (including sea/landscape connectivity)
Some Concern
Ninety-six percent of the property is protected by the European Union’s Natura 2000 network. Seventy percent is protected by a national park and by two regional parks. Most of the remaining areas are nature reserves and protected landscapes preserved by local law. The buffer zone and the land
adjacent to the property is subject to the territorial and landscape planning of the Emilia-Romagna Region that establishes the rules for the management of the territory. Much of the property is under private ownership. (IUCN 2023).
Boundaries
Some Concern
The nine component parts of the serial property include most of the evaporitic rocks of the Northern Apennine range. However, this is not the case for the component part Alta Valle Secchia where a large number of the values are located outside the property, including in areas that are not formally protected for their geological values. As paragraph 99 of the Operational Guidelines requires boundaries to incorporate all the attributes that convey the proposed Outstanding Universal Value and to
ensure the integrity of the property, IUCN considers that the boundaries of the component part of Alta Valle Secchia would need to be revised to capture the OUV and to ensure their effective protection. (IUCN 2023).
Overlapping international designations
Data Deficient
The northern part of the property overlaps with the Appennino Tosco-Emiliano Biosphere Reserve. The State Party should ensure strict
protection is granted to the entire World Heritage Site component part and to all identified attributes of the OUV (IUCN 2023).
Implementation of World Heritage Committee decisions and recommendations
Mostly Effective
Implementation has commenced but not yet complete.
Climate action
Highly Effective
The property has made many iconic contributions to understanding of the record of climate evolution over the last hundred thousand years, and provides lessons and education that support our understanding of climate
change in the future. (IUCN, 2023).
Management plan and overall management system
Mostly Effective
The management system consists of two management bodies. The component part of Alta Valle Secchia is managed by the Appennino Tosco-Emiliano National Park. All other component parts are under the control of the Emilia-Romagna Region, which directly supervises the management bodies of the regional protected areas. These management bodies have a management plan, a specific budget and dedicated staff (technical and administrative) to manage and control the respective areas. Key management issues include the protection of the attributes and values of the geological heritage, conservation measures for habitats and species of
Community interest, knowledge and communication of the natural environments. In addition, the northern part of the property overlaps with management of the Appennino Tosco-Emiliano Biosphere Reserve. (IUCN, 2023).
Law enforcement
Some Concern
The legal framework would be enforced through the management system. This system is complex, and as such enforcement could be less effective.
The system of community engagement and support appears strong, with the exception of the potential continued operation of the quarry. Without enforcement of the cessation of activity, the OUV could be compromised.
Sustainable finance
Highly Effective
The region and the responsible ministry provide adequate resources for the management of the area and according to the management strategy and the field mission. Additional staffing and financial resources for the management of the nominated areas is planned. For 2022 and 2023 the Ministry has provided almost 7.9 million USD per year for natural World Heritage projects. For the period 2023 to 2025 an annual budget of approximately 2.5 million USD is foreseen. (IUCN, 2023).
Staff capacity, training and development
Highly Effective
Staffing for the property is sufficient with 88 rangers and 79 ecological guards. Expertise in geo-conservation is sufficiently covered by staff and complemented by strong cooperation with nearby universities. (IUCN, 2023).
Education and interpretation programmes
Highly Effective
The Management Plan speaks in general terms about interpretive programs (Italy, 2023). The technical-scientific working group includes the Department of Education studies "Giovanni Maria Bertin" from the University of Bologna. A key aim for the site's management is to promote the knowledge of geological values through education and training programmes, engaging local schools (Regione Emilia-Romagna, 2022). The Emilia-Romagna Sustainability Education Network (RES ) connects all organizations (public
and private) responsible for promoting sustainability education in the region. It includes local authorities, educational and training institutions, scientific agencies, park authorities, business, and voluntary associations. In particular, the Centres for Education for Sustainability (CEAS) of Emilia-Romagna have been established. They are specialised structures distributed throughout the region. The CEAS “Protected Areas” have been set up by the
Management Authority for Parks and Biodiversity (Macroareas), and are responsible for sustainability education, with particular reference to biodiversity and natural heritage. In the WH site there are three of them: the “Protected Areas Emilia Orientale” CEAS, the “Protected Areas Emilia Centrale” CEAS, the “Parks School Romagna” CEAS. These CEAS-Protected Areas coordinate the educational activities of the “Gessi Bolognesi e Calanchi dell’Abbadessa” Regional Park, the “Vena del Gesso Romagnola” Regional Park, the “Onferno Reserve”, and the “Collina Reggiana Protected Landscape” (Regione Emilia-Romagna, 2022b).
Tourism and visitation management
Some Concern
The effect of increased visitation as a result of inscription is identified as a threat, and a visitation management plan still needs to be prepared to address this threat (IUCN, 2023).
Sustainable use
Mostly Effective
Agriculture appears to be at a sustainable level to support the OUV of the property. Quarrying has been identified as a non-sustainable use that would be ceased (IUCN, 2023).
Monitoring
Highly Effective
A long-term monitoring system has been set up, using ground- and underground-based observations, for improved evaluation of the chemical and ecological state of karst aquifers, seismotectonic movements, and climate cave conditions. Key aspects of the nominated property’s flora and fauna are also monitored. A Memorandum of Understanding was signed in 2020 including all the 37 responsible authorities. (IUCN, 2023).
Research
Highly Effective
Research is a strength of the site, both in further understanding of the OUV, and supporting management of the property.
Effectiveness of management system and governance in addressing threats outside the site
Mostly Effective
Quarrying activities outside the WH site boundaries are very localised and strictly regulated by the regional legislation. The few existing
activities outside the core areas are permanently monitored at the regional level. Agricultural activity, which is much less invasive but a little more widespread, is however regulated and monitored at the regional level and at the level of the single Park or protected area. The potential effects deriving from proximity to intensely anthropized areas (settlements, tourist attractions, pollution, depression from abandonment) are continuously monitored to ensure that pressure factors are kept under control (Regione Emilia-Romagno, 2022)
Effectiveness of management system and governance in addressing threats inside the site
Mostly Effective
The management system consists of two management bodies. The component part of Alta Valle Secchia is managed by the Appennino Tosco-Emiliano National Park. All other component parts are under the control of the Emilia-Romagna Region, which directly supervises the management bodies of the regional protected areas. These management bodies have a management plan, a specific budget and dedicated staff (technical and administrative) to manage and control the respective areas. Key management issues include the protection of the attributes and values of the geological heritage, conservation measures for habitats and species of
Community interest, knowledge and communication of the natural environments. In addition, the northern part of the property overlaps with management of the Appennino Tosco-Emiliano Biosphere Reserve. (IUCN, 2023).
The legal framework, governance arrangements, integration into local, regional and national planning systems, boundaries, and law enforcement all raise some concern for protection and management. These stem from the lack of legal protection for some components of the site, and a complex management system that is not yet fully developed. The management system consists of two management bodies. The component part of Alta Valle Secchia is managed by the Appennino Tosco-Emiliano National Park. All other component parts are under the control of the Emilia-Romagna Region, which directly supervises the management bodies of the regional protected areas. These management bodies have a management plan, a specific budget and dedicated staff (technical and administrative) to manage and control the respective areas.
Good practice examples
Vatnajokull World Heritage Site has a similar complex management system. It had been developed while the area was an Icelandic National Park, and it was ready for modification to support the OUV of the World Heritage Site Nomination. (UNESCO, 2019).

Two important periods in Earth history

Good
Trend
Stable
The nominated property encompasses two different geological periods during which evaporitic rocks were deposited: Firstly, the Triassic period (200 million years ago) associated with the breakup of the supercontinent Pangea and formation of the modern continents as well as the formation of the Atlantic and Indian ocean basins, and secondly, the ecological catastrophe known as the Messinian Salinity Crisis phase (6 million years ago), when the Mediterranean Sea largely evaporated. Over the last c.500,000 years the current cave system developed within these formations. (IUCN, 2023)

Extensive epigenic gypsum karst terrain

Good
Trend
Stable
The nominated property is an unusually well-preserved and extensive epigenic gypsum karst terrain. It includes a very high density of caves: over 900 caves in a relatively small area. There are over 100 km of caves in total, including the 11.5 km long Spipola-Aquafredda-Prete Santo cave system and the 7 km long hydrogeological tunnel system. It also includes some of the deepest gypsum caves in the world reaching 265 meters below the surface. (IUCN, 2023)

First and best studied evaporitic karst in the world

Good
Trend
Stable
The Evaporitic Karst and Caves of Northern Apennines are the first and the best studied evaporitic karst in the world, with academic work beginning in the 16th century. The features are accessible, well preserved, and readily understandable. These studies have had many iconic contributions to understanding of evaporitic karst, including their record of climate evolution over the last hundred thousand years, and their lessons to support our understanding of climate change in the future. This evaporitic karst and cave terrain has played a key role in the development of geology, speleology, mineralogy and hydrogeology. The site also contributed to the understanding of the use of evaporitic deposits as building materials: almost 2,000 years ago some of the natural caves were used by the Romans for the extraction of stunning transparent crystals to be used in window frameworks instead of glass. (IUCN, 2023)

Large diversity of chemical deposits, minerals, and fossils.

Good
Trend
Stable
The nominated property contains an unusually large diversity of chemical deposits and minerals associated with gypsum deposits and gypsum caves. Some of these minerals are found nowhere else, and no other area has, as yet, documented the same mineral diversity. The nominated property also contains many noteworthy and unique hydrological features and surface karst forms, including hypogean bends, very large gypsum cone features, salt springs, and speleothems. The paleontological values include gypsum strata with evidence of surface exposure, leading to the development of ancient intra-Messinian karst features containing one of the most important Late Miocene continental faunae in the world. (IUCN, 2023)
Assessment of the current state and trend of World Heritage values
Stable
The property was inscribed in 2024 and the status and trend reflect conditions at the time of inscription.
Assessment of the current state and trend of other important biodiversity values
Good
Stable
The property has been inscribed in 2024 and the status and trend reflect conditions at the time of inscription.
Assessment of the current state and trend of other important values
Good
Stable
The property has been inscribed in 2024 and the status and trend reflect conditions at the time of inscription.
Organization Brief description of Active Projects Website
1 Region Emilia-Romagna Started in 2010, the Life Gypsum project was created for the protection and management of the habitats associated with the gypsum outcrops of Emilia-Romagna. The project takes place in all six regions of the Natura 2000 sites, which are rich in biodiversity and natural history. A gypsum outcrop is a sedimentary rock formed by the precipitates from the evaporation of saltwater. The gypsum outcrops are rare and fragile consisting of many different species, which is the reason for protection. The teaching modules of the project are aimed at developing the idea that the gypsum has a natural link with the species that inhabit it. Such inhabitants are various plant communities, and different species of bats. When travelers participate in the Life Gypsum project, they learn proper management actions of delicate ecosystem. After experiencing this, travelers leave with the increased knowledge of environmental sensitivity and natural biodiversity.
https://www.parcoappennino.it/page.php?id=482
2 Region Emilia-Romagna, tourism agencies The Interreg CEETO project, of which the Region is the leader, promotes an innovative model of sustainable tourism inspired by the criteria contained in the European Charter for Sustainable Tourism in Protected Areas (ECST ). Of the eight pilot actions, one concerns the national park, where the diversified tourist flow is not always aware of the value and fragility of the protected areas themselves.
https://programme2014-20.interreg-central.eu/Content.Node/Project-description.html

References

References
1
Regione Emilia-Romagna (2022b). Proposal of the Evaporitic Karst and Caves of Northern Apennines. For the inscription on the UNESCO Natural World Heritage list. Nomination dossier. Ministerio della Transizione Ecologica. Pp. 1-222. Available at: https://whc.unesco.org/en/list/1692/documents/
2
IUCN (2023). IUCN Evaluation Report for Evaporitic Caves and Karst of the Northern Appennines. In: IUCN World Heritage Evaluations 2022 and 2023. WHC/23/45.COM/INF.8B.
3
Regione Emilia-Romagna (2022). Proposal of the Evaporitic Karst and Caves of Northern Apennines. For the inscription on the UNESCO Natural World Heritage list. Project of the overall management strategy. Ministerio della Transizione Ecologica. Pp. 1-68. Available at: https://whc.unesco.org/en/list/1692/documents/
4
UNESCO (2019). Management Plan, Vatnajokull National Park: Dynamic Nature of Fire and Ice (1604).

Indigenous Heritage values

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