Here is an obscure one. Crest iron road/trail Yukon. Start at Mayo Yukon and head north on the amerada / proctor / wind valley road. Three names same road. Original road went to Eagle plains Yukon. Construction began in 59 to bring supplies to drilling rigs in Eagle plains.
From hungary creek west to the dempster was the winter road part. The access trail/road for crest iron starts here and goes east. This road was put 1961 to bring supplies to geologists who where surveying and accessing the site of north americas largest iron ore deposits. Road abandoned four years later.
A couple years later a winter road was punched in to fairchild lake as well as well as some connector winter roads for siesmic lines north of there as well.
Chevron resources is the minersl rights owners. There is an abandoned camp at crest iron with a huge fuel tank. About 200 fuel barrels and some buildings on site.
There are two major rivers to cross to get there. The bonnet plume and the wind river. Location is about 225 klics north east of Mayo Yukon and about 550 to 600 kilimeters of road/trail. A couple of google images pictures.
And there is another smaller river to cross. The snake.