ALG-367, Skyrock Arch, North Idou Area Outskirts. 11.5 meter span (measured), 6 meter height (estimated). From ALG-366 (Overlook Arch) take an easy climb up northwest for 100 meters to find the arch at the highest point of these rocks. Photo taken at sunset. Guide Mohamed Bilali provides scale under the span. The arch offers a superb panorama around Idou maze. The guide was not accustomed to climbing up on the top of the rock, but was curious to know where we went. He found these arch hunting days very enjoyable. There are more arches around.