shaft — 1. Vertical, or steeply inclined, sections of a cave passage, of enormously varied size. The world’s deepest known shaft is the entrance shaft of Brezno pod Velbom on the Kanin plateau, Slovenia; it is 501m deep, with no ledges. Much debate… … Lexicon of Cave and Karst Terminology
cave — cavelike, adj. /kayv/, n., v., caved, caving. n. 1. a hollow in the earth, esp. one opening more or less horizontally into a hill, mountain, etc. 2. a storage cellar, esp. for wine. 3. Eng. Hist. a secession, or a group of seceders, from a… … Universalium
Orjen — Mount Orjen from the North (6 June 2001) Elevation 1,894 m (6,214 ft) … Wikipedia
Cave — For other uses, see Cave (disambiguation). Cavern redirects here. For other uses, see Cavern (disambiguation). Lechuguilla Cave, New Mexico A cave or cavern is a natural underground space large enough for a human to enter. The term applies to… … Wikipedia
Hezekiah's Tunnel — 2010 Siloam Inscription … Wikipedia
Raggejavreraige — is a cave located above the Hellemofjord (Tysfjord, Nordland) in northern Norway. It is the deepest cave in Scandinavia and the only deep cave north of the Arctic Circle.Regional SettingGenerally the area is a vast plateau exceeding 700 m… … Wikipedia
Mine exploration — This article is about visiting mines. For searching for minerals, see Mineral exploration. Mine exploration is a hobby in which people visit abandoned mines, quarries, and sometimes operational mines. Enthusiasts usually engage in such activities … Wikipedia
Cave diving — is a type of technical diving in which specialized SCUBA equipment is used to enable the exploration of natural or artificial caves which are at least partially filled with water. It is an extension of the more common sport of caving, but is much … Wikipedia
Aachtopf — The Aachtopf is Germany s biggest natural spring, producing an average of 8,500 liters per second. Production varies seasonally and in response to the weather, but the spring never falls dry. The Aachtopf is a karst spring which is located south… … Wikipedia
Hellhole — is a large, deep and in the caving community fabled pit cave in Germany Valley, eastern West Virginia. It is the 11th longest cave in the United States and is home to almost half of the world s population of Virginia big eared bats. At 518 feet… … Wikipedia
