Claim: Wild Horse Island was located in Lake Tahoe and consists of 4,254 acres.
Evidence: Wild Horse Island is the largest island on Flathead Lake, the largest freshwater lake in Montana. For centuries, the Salish-Kootenai used the island, approximately 2,164 acres (876 ha) in size, in order to pasture horses and keep them from being stolen by other tribes. 
For centuries, the Salish-Kootenai used the island, approximately 2,164 acres (876 ha) in size, in order to pasture horses and keep them from being stolen by other tribes. 
2,163 acres (875 ha) Flathead Lake