Vice-Admiral William John Samuel Pullen was a Royal Navy officer who was the first European to sail along the north coast of Alaska from the Bering Strait to the Mackenzie River in Canada. His 1849 journey was one of the many unsuccessful expeditions to rescue Sir John Franklin and explore the Northwest Passage.
William J.S. Pullen (State Library of South Australia B5851)
Meeting of HMS Plover and HMS Herald in the Arctic Seas of Alaska
The Mackenzie River is a river in the Canadian boreal forest. It forms, along with the Slave, Peace, and Finlay, the longest river system in Canada, and includes the second largest drainage basin of any North American river after the Mississippi.
The Mackenzie River in August 2009
Sentinel-2 True Colour satellite image of the confluence of the Laird and Mackenzie Rivers, showing the characteristic sediment pattern: muddy water from the Laird flowing in from the South paints the water on the Western bank brown while water on the eastern bank is relatively clear for a long stretch of the river. White spots are ice floes. The original image can be accessed here: https://link.dataspace.copernicus.eu/nc5e
Dene fishing camp on the Mackenzie River, north of the Arctic Circle
Satellite view of the lower Mackenzie River