Speleology

Recreation, Outdoors, Speleology, Wild Caves - Nenthead Mines Exploration. Mine exploration around Nenthead, Cumbria.

Recreation, Outdoors, Speleology, Wild Caves - Ogof Ffynnon Ddu. Features virtual tour of the OFD system located in the Upper Swansea Valley in South Wales.

Recreation, Outdoors, Speleology, Wild Caves - Matienzo Caves. Expedition and location reports from Lancaster Caving Club.

Recreation, Outdoors, Speleology, Urban Speleology - Infiltration. Website on urban exploration, featuring a webring, dictionary, and many pointers.

Urban Explorers Network

Uniting all who care about Detroit and its challenges.

Urban Exploration in Vancouver, BC, Canada.

Recreation, Outdoors, Speleology, Urban Speleology - Dark Passage. A New York based organization providing blind archaeologists with the finest quality flashlights.

Recreation, Outdoors, Speleology, Urban Speleology - Avatar-X's Urban Exploration Resource. A website dedicated to urban exploration in Canada and other areas, with many image galleries and stories, and an active urban exploration forum.

Recreation, Outdoors, Speleology, Urban Speleology - Action Squad: Minneapolis Urban Adventurers. An urban exploration crew in Minnesota.

Recreation, Outdoors, Speleology, Urban Speleology - Portsdown Tunnels. Researches and records the above and underground sites on Portsdown, Portsmouth, UK.

An urban exploration social network and reference site. The website with an interest in anything secret. Secret underground cities, classified military instilations, cold war nuclear bunkers, WW2 secret underground ammunition stores and underground factories.