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Uamh an Claonaite (Scottish Gaelic: Cave of the sloping rock) is the longest cave in Scotland. It consists of a series of dry passages and a series of...

point reached by diving in Gavel Pot. The deepest cave in Scotland is Uamh an Claonaite in Assynt, 110 metres (360 ft) deep. The deepest cave in Northern...

dive destinations in the US for scuba diving and training. The Blue Hole is an artesian well and cenote that was once used as a fish hatchery. The Blue Hole...

about 125 m (410 ft) which is the most often cited depth up to this day. An expedition was conducted in the summer of 1997 to collect core samples from...

steeply to over 1,000 metres (3,300 ft). The hole and the surrounding area have an abundance of coral and reef fish. The Blue Hole is popular for freediving...

(8 ft) tall.[citation needed] It was sculpted by Guido Galletti, based on an idea of Italian diving instructor Duilio Marcante [it]. The statue was placed...

Osborne Reef is an artificial reef off the coast of Fort Lauderdale, Florida at 26°06′27″N 80°03′54″W / 26.10748°N 80.06493°W / 26.10748; -80.06493...

the lower part of the abyss is flooded by the Hranice Lake. The abyss has an elliptical shape and is situated in the SE-SW direction. It is approximately...

feet (6.1 m) which are often used for Open Water certification dives, and an inverted metal "talk box" that traps air, allowing divers to remove their...

depressions formed by solution of superficial rock or subsidence collapse into an underground void. Most blue holes are formed through these processes although...

Petit St Vincent, known locally as PSV, is an island 40 miles (64 km) south of St. Vincent in the Grenadine islands. It is the southernmost island in Saint...

Cozumel (Spanish pronunciation: [kosuˈmel]; Yucatec Maya: Kùutsmil) is an island and municipality in the Caribbean Sea off the eastern coast of Mexico's...

Graemsay, Burray, South Ronaldsay and Hoy. Its sheltered waters have played an important role in travel, trade and conflict throughout the centuries. Vikings...

in the spring began in 1850, when Sarah Smith reported seeing the bones of an ancient mastodon on the bottom. Since that time, scientists have identified...

More Assynt. This part of Assynt hosts the longest cave in Scotland, Uamh an Claonaite, which lies five miles (eight kilometres) south of Inchnadamph. The...

location with accessible groundwater. In Mexico the Yucatán Peninsula alone has an estimated 10,000 cenotes, water-filled sinkholes naturally formed by the collapse...

(Indonesian: Tiga Gili [Three Gilis], Kepulauan Gili [Gili Islands]) are an archipelago of three small islands or Gili island triplets — Gili Trawangan...

change was the fitting of large crane-like gantry davits, each powered by an electric motor and capable of launching six lifeboats which were stored on...

being sunk less than a year after she was commissioned, Prince of Wales had an extensive battle history, first seeing action in August 1940 while still being...

their most direct sunlight. The Punta Cana area has an estimated population of 100,000, with an annual growth rate of 11% as of 2011. To the north, it...