In another model, the inundation of Doggerland began with the'catastrophic release of water from a North American glacial lake'. https://www.nationalgeographic.

In another model, the inundation of Doggerland began with the'catastrophic release of water from a North American glacial lake'. https://www.nationalgeographic.org/maps/doggerland/ https://www.nationalgeographic.org/maps/doggerland/ (In which case, the flooding might have been relatively fast.)