The Lemhi Mountains are a mountain range located in eastern Idaho, part of the larger Rocky Mountains. They are known for their rugged terrain, diverse wildlife, and scenic beauty. The range is primarily composed of granite and volcanic rock, offering various outdoor activities such as hiking, camping, and fishing. The mountains are named after the Lemhi River, which flows nearby. This area is rich in history, as it was explored by the Lewis and Clark Expedition in the early 1800s. The Lemhi Mountains are also home to the Shoshone and Bannock tribes, who have lived in the region for thousands of years.