Bottomless Lake is a lake within a small Canadian village. It appears in "The Beast Is Awake in Bottomless Lake", an episode of The Scooby-Doo Show.
The gang decided to head on a fishing trip up north, where they got lost and found themselves in Canada. They camped at Bottomless Lake, which was completely deserted. The gang got lost again while there, and when Shaggy Rogers and Scooby-Doo decided to ask for directions, they were chased by a horrible sea monster.