Lolo National Forest is a national forest located in western Montana, United States with the western boundary being the state of Idaho. The forest spans 2 million acres and includes four wilderness areas; the Scapegoat and the Selway-Bitterroot Wilderness are partially within the forest while the Welcome Creek and Rattlesnake Wildernesses are s…Lolo National Forest is a national forest located in western Montana, United States with the western boundary being the state of Idaho. The forest spans 2 million acres and includes four wilderness areas; the Scapegoat and the Selway-Bitterroot Wilderness are partially within the forest while the Welcome Creek and Rattlesnake Wildernesses are solely in Lolo National Forest. The forest was created in 1906 from 4 different previous forests which were combined for administrative purposes. Lolo National Forest is west of the Continental divide and has a biodiversity influenced by both continental and maritime weather creating a transitional forest that has a high number of different plant and tree species.