Beetles :

Buprestidae by Maurizio Gigli.

Palearctic Cerambycidae by Martin Rejzek and Michal Hoskovec.

Meloidae by Stanislav Krejcik.

Tenebrionidae by Julio Ferrer and Siavash Taravati.

Tenebrionidae and allied families by Richard Beysak.

Beetles of Israel by Oz Rittner.

The Beetle Ring.

Rock Art :

Arts rupestres et Mythologies the other site of Jean-Loic with all the links you need about rock art.

Libya and Sahara :

Index of Libyan localities with coordinates.

Sahara Nature by Nadia.

Equipment :

Freeware for stacking photos with different field depth: CombineZ5