Located across the river from Mackenzie Cairn, the flag shows the location of the original fort, which was erected in 1792 for the North West Company. Sir Alexander Mackenzie wintered at Fort Fork in 1792. David Thompson also wintered here in 1802. The fort was abandoned in 1805 and has since been almost completed eroded by the river. The cairn to commemorate Fort Fork was erected on River Lot 19 in 1929, on land donated by Joseph Neff.