| Horseshoe Lake | |
| Location: | Mono County, California |
| Type: | lake |
| Pushpin Map: | California#USA |
| Pushpin Map Alt: | Location of Horseshoe Lake in California, USA. |
Horseshoe Lake is a lake in Mono County, California, near the Mammoth Mountain ski resort. The soil near the lake contains a high concentration of carbon dioxide which, when it seeps from the soil, kills trees and poses a threat to humans.[1]