ALG-82. This natural arch is located on the high maze of the site of Sefar on the vast Tassili National Park,
wilaya of Illizi, Algeria. The opening has a measured span of about 22.1 meters. Henri Lhote (1903-1991) is a french explorer of Tassili-n-Ajjer who first reported numerous rock engravings and paintings on the plateau. 32R 574643 2729377