Be warned: This cave not for the feint of heart.
46km north of Grootfontein, there is a cavern, known as the Dragon’s Breath Cave.
Deep down this cave, is the World’s largest underground non-subglacial lake, which was discovered in 1986 by the South African Speleological Association and named for the humid air that is felt emanating from its entrance.
Its unique conditions, zero-sunlight conditions, little wave action to kick up sediment and its stable temperature, allow the existence of one of the world’s rarest and most isolated species: the golden cave catfish,Clarias cavernicola, only found here.
This species is endangered and may have a population of less than 200 catfish. Access to the interior is difficult – involving climbing, ropes, narrow tunnels and ledges followed by a drop from the roof of a vast cavern in order to finally reach the water a full hundred metres below. Surface area is almost 2 hectares. Depth: beyond 100 m, its bottom has not been surveyed yet.