Tatacoa desert, Colombia. In the Huila region, between two mountain ranges, lies a landscape that seems to belong to another planet. Despite its name, Tatacoa is not a true desert but a dry tropical forest, carved by wind and rain into labyrinths of red and ochre clay, dotted with cacti and thorny trees. Further on, the earth turns grey and the horizon opens onto the Andes. A silent, burning land, crossed by a few horsemen, where the sky at night is among the clearest in the country.