Calansho Sand Sea

The Calansho Sand Sea fills a vast tract of Cyrenaica's Kufra District in eastern Libya. This erg, an area of actively shifting dunes, covers approximately 62,000 square kilometres. Its sands extend about 500 kilometres from the Jaghbub and Jalo area in the north toward Kufra in the south. The erg runs parallel to the Great Sand Sea and joins that neighbouring field at their northern ends, so the two should be understood as adjacent but distinct sand countries. Wind has built dunes up to 110 metres high, arranged in rough north–south lines. In such terrain, distance is deceptive and landmarks can move. Caravans followed wells and firm ground around the dune fields.