Hen Rock is located on Akchaheré butte 2 hours of hike north of
Emelell buttes. This area is a little stone forest similar to central area of
Tin-Tazarift area. Akchaheré means "lost the goats" in Tamahaq dialect. There is any doubt you can lost your goats there. The arch has a span of 2.3 meters. It is located at GPS coordinate 25 degree 09.801' 9 degree 23.116'