From Wikipedia:
Fort Selkirk is a former trading post on the Yukon River at the confluence of the Pelly River in Canada’s Yukon. Archaeological evidence shows that the site has been in use for at least 8,000 years. […] There is no road access. Most visitors get there by boat, though there is an airstrip at the site. Population: 332.
(image above from the Government of Yukon’s web site)
Love the diagram as Imre travels the Yukon River. Great reference points.