| Horse Thief Lake | |
|---|---|
| Location | Pennington County, South Dakota |
| Basin countries | United States |
| Surface elevation | 4,905 ft (1,495 m) |
Horse Thief Lake is a lake in Pennington County, South Dakota. It is approximately two miles to the northwest of Mount Rushmore, making it the closest lake to that monument. It appears to be the lake seen north of Mount Rushmore in the 2007 Disney movie National Treasure 2: Book of Secrets when the entrance to the secret golden city of Cibola is found. However, the lake actually used in the film is the nearby Sylvan Lake, five miles southwest of the monument.