The author with Kel-Meddak chief guide Mohamed Bilali in Aroum Pass (Akba Aroum), Tassili-n-Ajjer in Algeria. From many years and trip Mohamed Bilali guided the author across Tassili-n-Ajjer Plateau in many places. From well-know localities to secluded area or remote Meddak region where is native Mohamed. It is a great man. Thanks Mohamed for all great time we had with you.

Mohamed Bilali in Ti-Spad site at Bend Arch, Gate of Ti-Spad, Streamlined Arch, Tarik Arch and Triplex Arch