Els gravats rupestres prehistòrics d'estil Tazina del jaciment de Sluguilla Lawash (Sàhara Occidental) 

Ventura Almeda, Helena (Date of defense: 2020-02-21)

Sluguilla Lawash is the site with a higher concentration of open air prehistoric rock art of Western Sahara. It has 1143 engraved slabs with 2087 motifs, among which the 99% have an incised stroke, with a dark desert varnish ...