Loch Arthur is the most northern of the putative Excalibur lakes. Loch Arthur is just outside of the town of Beeswing, between the towns of Dumfries and Castle Douglas. The lake is set in the trees and surrounded by hills.
Although locals claim that King Arthur's sword rests on the bottom of Loch Arthur, there are no stories, only the name to make any connection with King Arthur.
Scottish Arthurian Sites