Colorado's First Fort and First Weather Station --

Fort Massachusetts was officially established on June 22, 1852. Built on the west bank of Ute (Utah) Creek, its primary function was to protect travelers and settlers in the San Luis Valley (then part of the New Mexico Territory) from Indian attack.

In 1853 the explorer John W. Gunnison and his party stopped at Fort Massachusetts, as did an expedition to California under the command of Lt. E.F. Beale. Gwinn Harris Heap, who was with the Beale group, described the fort as "a well-built stockade of pine logs, ten feet in height, and enclosing very comfortable quarters for one hundred and fifty men."

Following the Christmas massacre at Fort Pueblo in 1854, troops assembled at Fort Massachusetts for a campaign against the Indians who were responsible. After six months the Mohuache Utes and their allies, the Jicarilla Apaches, were decisively beaten, and they ceded their lands in the San Luis Valley.

Within a few years after its establishment, it became apparent that the poorly chosen swampy location was unsuitable for the fort's operations, and in the latter part of 1858 the troops were removed to Fort Garland, a new adobe post that had been constructed some six miles to the south.

The site is actively being excavated by the Adams State University - Fort Massachusett's Field School by Dr. Richard Goddard.