Doggerland was an area in the North Sea. During the last ice age, the oceans sank and it became dry land. It connected Great Britain to the European continent. Between 6500 and 6200 BCE sea levels rose, and Doggerland was flooded. Research has suggested that Doggerland was between the east coast of England, the coast of the Netherlands, and Jutland. Doggerland is named after the Dogger Bank. It was first suspected to exist in 1931 when a fishing boat found an antler of a deer in the area. Doggerland had a surface of about 23,000 square kilometres (8,900 sq mi).