Called also Old Rocky Mt. Fort.

North West Co. fort on Mackenzie river about 123°20'W.& 62°15'N. Built by John Thomson, clerk in N. W. Co., 1800, "in full view of Rocky Mts. at whose smallness I was greatly surprised." It was soon abandoned and spoken of by Alex. Mackenzie in 1805 as Old Rocky Mt. fort. Ruins are now visible in Camsell Bend near mouth of Nahanni river. It is marked "Old Fort" on Arrowsmith map 1832 No. 101. See also maps No. 3, 1, 100, 8.

The following forts were also called Rocky mountain House, namely:

Jasper House No. 245, Hudson's Hope No. 227, Acton House No. 3, Henry's House No. 218.