Fort Peabody, Military outpost in San Miguel County, United States.

Fort Peabody stands at 13,365 feet elevation on the border between Ouray and San Miguel Counties and features the remains of a wooden structure reinforced with stone walls. The site sits on a high, exposed ridge with sparse vegetation.

Troop A of the Colorado National Guard built the stone redoubt in 1904 on orders of Captain Bulkeley Wells, manager of the Smuggler-Union Mining Company, to keep deported union men from re-entering San Miguel County. Sentries occupied it from February 21 until martial law was revoked on June 15, 1904, and company employees held the post until about 1908. It was listed on the National Register of Historic Places on March 30, 2005.

The name "Fort Peabody" honored Governor James H. Peabody, who sent National Guard troops to San Miguel County in 1903. The National Register nomination notes that no document shows whether the guard, Bulkeley Wells, or miners coined it, possibly tongue-in-cheek. The post had telephone service to Telluride, giving Wells advance notice of anyone heading to town.

The site lies on the ridge above and southeast of the Imogene Pass road summit, on the lower ridge of Telluride Peak, spanning about 413 feet northwest to southeast. The stone enclosure identified as the "sniper nest" sits down the ridge to the northwest of the main remains. The post was stabilized and restored in 2010 under the San Miguel County Open Space and Recreation office and the USDA Forest Service.

This site holds the record as the highest elevation military post ever established in the United States at 13,365 feet. Its extreme altitude made it one of the most remote and difficult positions to maintain.