ALG-414. Sleeping Arch is located on the east area of the site of Tin-Tazarift on the vast Tassili National Park,
wilaya of Djanet, Algeria. The opening has a measured span of 9.7 meters. The arch is totally obscurred from sight, well-hidden and very difficult to find hence the name. As a reminder, you are here on a vast maze of "stone forest".