The Sinai Peninsula tells a story written in sediment. Wadis, those deeply incised river valleys, are filled with deposits reaching up to 50 meters thick in places. These aren't minor accumulations. They represent massive sedimentation events that shaped the entire morphology of the landscape. Where these valleys meet the mountain rims, you see broad alluvial fans, evidence of powerful flows carrying enormous volumes of material down from higher elevations. What kind of hydrological regime could produce sediment fillings of that magnitude? The scale points to conditions far wetter than what we see in the Sinai today, episodes of intense runoff capable of moving that much material and depositing it in such thick sequences. The landscape preserves a record of climate dramatically different from the present, a time when water carved and filled these valleys with the force we now associate with major river systems.