Biggar occupies a key location close to two of Scotland's great rivers, the Clyde flowing to the west, and the Tweed flowing to the east. Stone and Bronze-age artefacts have been found in the area but the strongest evidence of settlement occurs on the hills surrounding the town. One of these is Bizzyberry Hill where Iron Age remains dating back almost 2,000 years have been found. The present day A702 follows the route of a Roman road, which linked the Clyde Valley with Musselburgh.