West Thumb Geyser Basin: Located on Yellowstone Lake's shore, this small thermal area holds lake shore geysers, hot springs, and bubbling paint pots. Fishing Cone is one of many lake shore geysers submerged here until the lake's water level drops in late summer. Fishing Cone gets its name from the fact that fishermen used to catch trout from the lake and then promptly drop them into its boiling waters to cook.
— from the Yellowstone Park Web Site Site