guelta d`archei waterhole near oasis, camels dringing the woater, ennedi plateau, chad, africa.

039 adventure africa archei camel camels canyon chad cliff climatic darchei desert discovery dringing dromedary dune dunes ennedi erg erosion exploration formation geology gorge guelta heritage hill landscape mountain mountains natural nature north oasis panorama pinnacles plateau rock sahara sahel scenery sculpture stone texture tibesti tschad unesco valley vegetation waterhole wilderness woater