An Egyptian scientist, Fekri Hassan from University College London, has put forth clear evidence that a sudden global climate change caused the complete drying up of Lake Faiyum—--a major body of water which was fed by the Nile and is 65 metres deep--between 2200 and 2150 BC, around the start of the Old Kingdom's collapse. The evaporation of the lake's water, which occurred over a period of many years, hints at the severity of the drought which affected Egypt during this time.
An Egyptian researcher, Fekri Hassan from University College London, has presented substantial evidence indicating a swift global climatic shift led to the complete dehydration of Lake Faiyum—--a major water reservoir sustained by the Nile and measuring 65 metres in depth--between 2200 and 2150 BC, at the start of the Old Kingdom's collapse. The gradual evaporation of the lake's waters over several years underscores the severity of the drought that affected Egypt during this time.