Shawmut is east 16 miles east of Harlowton along the Musselshell River. Nearby, Deadman's Basin Reservoir is well known for camping, fishing boating and swimming. Avaceratops lammersi dinosaur was discovered in the Shawmut area and is now housed in the Upper Musselshell Museum in Harlowton. This two-story limestone building, constructed in 1909, is filled with treasures that belong to the people who lived in, worked and developed the Upper Musselshell River country.