Français : limites de l'extension maximale du lac "méga Tchad" à l'Holocène (zone bleue limitée par une ligne pointillée bleue) ; d'après [1] et sur Chad Topography.png (PD) par Sadalmelik comme fond
English: maximum extension of the Holocene Lake Mega Chad (light blue area limited by a blue dotted line) ; based on [2] and using Chad Topography.png (PD) by Sadalmelik
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