Sir Alexander Mackenzie Provincial Park, Provincial park and national historic site in Central Coast Regional District, Canada

Sir Alexander Mackenzie Provincial Park covers 5 hectares on the west coast of Dean Channel, just north of Elcho Harbour and 65 km northwest of Bella Coola. It shares a boundary with the Cascade-Sutslem Conservancy and holds a cairn and a marked rock above the beach.

In 1792 Alexander Mackenzie, working for the North West Company, left Fort Chipewyan to find a river route to the Pacific. He reached Dean Channel on 22 July 1793 and painted on a rock in bear grease and vermilion: "Alex Mackenzie from Canada by land 22nd July 1793." In 1923 surveyor R.P. Bishop inscribed the words permanently. The site became a national historic site on 4 June 1924 and a provincial park on 10 February 1926.

A First Nations village once stood at this spot, and petroglyphs carved into the rock are still visible along the beach. Visitors who land here can look for these carvings, which record the long use of Elcho Harbour by coastal peoples.

The park and its monument can only be reached by boat; a float plane landing may be possible when the sea is very calm. There are no facilities at the site, so bring everything you need. The nearest communities are Bella Coola to the southeast and Ocean Falls to the west.

The rock bearing Mackenzie's inscription also displays permanent engravings added later by surveyors alongside the original handwritten message. This layering shows how different periods left their marks on the same stone.