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Geotechnical Egineering News tagged with [Africa]

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BBC NEWS   16 May 2023   Africa   Chad  
<p>My eyes lifted up towards a rocky ledge carved into a sandstone cliff in the heart of Chad's Ennedi Massif. I saw a face, then, as my eyes adjusted to the gloam, another appeared. Painted in bright ochre and white, men were riding camels and giant cows ...