The British Isles were part of continental…
7101 BCE to 6958 BCE
The British Isles were part of continental Europe before the end of the Devensian glaciation (the most recent ice age) around ten thousand years ago.
The North Sea and almost all of the British Isles during this period were covered with ice.
The sea level was about one hundred and twenty feet lower than it is today, and today’s English Channel was an expanse of low-lying tundra, through which passed a river that drained the Rhine and Thames towards the Atlantic to the west.
As the ice sheet melted, a large freshwater lake formed in the southern part of what is now the North Sea.
The outflow channel from the lake entered the Atlantic Ocean in the region of Dover and Calais as the meltwater could still not escape to the north, the northern North Sea being still frozen.
Climatic shift, leading to excessively rich spring feed and mass lameness from founder, made wild horses easy prey (Bolich & Ingraham) as populations dropped by 7000 in Europe proper.
The horse, never found in Ireland, now disappeared from the island of Great Britain (Horse & Man, Clutton-Brock).