Kef Toghobeit Cave
Kef Toghobeit is a karst cave near the settlement of Bab Taza in Chefchaouen Province, Tanger-Tetouan-Al Hoceima, in northern Morocco. Currently known to be long and deep, it is the deepest cave in Morocco, and the third deepest cave in Africa.
Although Kef Toghobeit has been well-explored, its full extent is not yet known. Indeed, the karst topography of the Rif mountain range where the cave begins has barely been mapped - just 1000 caves are known in Morocco, and the geology would suggest that more than this exist.
John Volanthen
In 2004, Volanthen and Stanton set a world record for the greatest depth achieved in a British cave, cave diving at Wookey Hole in Somerset.
In 2010, Volanthen, Stanton, Jason Mallinson, and René Houben set a world record for the longest cave penetration dive, reaching in the Pozo Azul cave system in the Rudrón Valley in Spain.