Lesser-known places, events, trails, and historical sites
Borra Caves is a limestone cave system in the Araku Valley of Andhra Pradesh that extends approximately 150 metres underground and features intricate …
Waitomo Caves is a limestone cave system in the Waikato region of New Zealand's North Island that is renowned for its glowworm populations and undergr…
Ronda's water mine is a qawraja, a fortified well-and-chamber system engineered to protect and control access to a critical water resource in an arid …
UNESCO World Heritage Site…
Fingal's Cave is a sea cave on the Isle of Staffa in the Inner Hebrides that is notable for its regular hexagonal basalt columns and cathedral-like in…
UNESCO World Heritage Site…
The Avshalom Cave is a limestone cavern in the Judean Hills of central Israel that contains extensive stalactite and stalagmite formations. The cave d…
Switzerland's cooling caves, known locally as grotti, are natural or semi-natural caverns in Alpine rock formations that maintain stable underground t…
Damanhur is a spiritual federation and intentional community in the foothills of the Italian Alps, approximately 50 kilometres north of Turin, that op…
Akiyoshi-do Cave is a limestone cave system in Yamaguchi Prefecture, Japan that represents one of the largest underground formations in the country. T…
The Caves of Languedoc-Roussillon are a network of karst cave systems in south-western France that contain geological formations spanning from the Car…
Mramornica Cave is a marble karst cave in Istria, Croatia that features extensive calcite and marble formations developed within Mesozoic limestone st…
Buchan Caves Reserve is a cave system in southeastern Victoria that features two main limestone caverns with stalactite and stalagmite formations. The…
Gouffre de Padirac is a natural sinkhole and limestone cave system in the Lot department of Occitanie, southwestern France, that contains an active un…
UNESCO World Heritage Site…
Smoo Cave is a sea cave in Sutherland, Scottish Highlands, that is distinguished by its combination of marine and freshwater erosion features. Located…
Blue Grotto (Biševo) is a sea cave in the Adriatic Sea that derives its distinctive character from the interplay of sunlight and water. Located on the…
Ali Sadr Cave is a cave system in Hamadan Province, northwestern Iran, that contains one of the world's largest underground saltwater lakes. The cave …
The Aven-Armand Cave is a limestone cavern in southern France that contains an exceptional concentration of white stalactites and stalagmites formed o…
Balcarka Cave is a limestone cave system in the Moravian Karst region of Czechia that contains extensive passages carved by underground streams over g…
Cango Caves is a limestone cave system in the Western Cape province of South Africa that contains multiple interconnected chambers and passages. The c…
Sudwala Caves is a limestone cave system in South Africa that contains extensive underground chambers and mineral formations. The caves formed through…
Underground Naples is a network of subterranean passages, chambers, and aqueducts beneath the city of Naples that comprises quarries, Roman-era infras…
Aillwee Cave is a limestone cave system in the Burren region of County Clare, Ireland, that features a network of passages decorated with stalactites …