Original: After the last retreat of the ice at the close of the Pleistocene epoch sea levels were up to 70 m lower than at present and it is likely that circa 14,000 BP the island was connected to mainland Scotland.
Simplified: After the last retreat of the ice at the close of the Pleistocene epoch sea levels were up to 70 m lower than at present and it is likely that circa 14,000 years ago the island was connected to mainland Scotland.