"the former landmass in the southern North Sea that connected the island of Great Britain to mainland Europe during the last ice age"

PRE-STREETS: "The inhabitants lived in mud-brick houses which were crammed together in an agglutinative manner. No footpaths or streets were used between the dwellings, which were clustered in a honeycomb-like maze. Most were accessed by holes in the ceiling, which were reached by interior and exterior ladders and stairs. Thus, their rooftops were their streets."

pre columbus north american contact aka diffusionism

abandoned but so far preserved in perfect condition