a large rock in the middle of a desert

Ahaggar Nationalpark, Algerian Sahara - Yoûf-Ehakit - Bipod Arch stable for thousends of years - The most thiny leg has 15 cm. The arch itshelf has a span of 5.6 meters and a height of 1.9 meters. The whole boulder is about 5.5 m high and 6 m long (@archmillennium.net). Balance - photo made by rouichi / switzerland