The Three Lakes Patrol Cabin was built in 1934 in Mount Rainier National Park as a district ranger station. The log cabin was built to a standard plan designed by W.G. Carnes, Acting Chief Architect of the National Park Service Branch of Plans and Designs, supervised by Thomas Chalmers Vint. The cabin measures about 13.5 feet (4.1 m) by 24 feet (7.3 m). It is a simple gable structure with a shed roof over the front door, supported by brackets. The eaves have a similar bracket detail. Log ends project prominently at the corners. It consists of a single room, unfinished apart from a wood floor.