Old Hudson's Bay Co. post on right bank of the Athabaska river, opposite the mouth of Calumet creek. This fort was probably one of the earliest posts in that region after Pond's Old Establishment and coëval with the Fort of the Forks. In later years it was superseded by Old Red River House which, in turn, became Fort Mackay. In 1817 Pierre-au-Calumet was seized and plundered by the North West Co. It was deserted before 1848. Mackay river was formerly called Red River, and the Athabaska was known as the Elk or La Biche river. Shown on maps of 1851, on Hind's map 1858, on No. 12, 3, 41, 100-101.