Road side highway turnout - Rest Area Eddontenajon Lake, rest area, picnic tables, pit toilets, fishing. West side of the highway. Photo taken from rest area, looking at Eddontenajon Lake, B.C. The Stewart-Cassiar Highway The Stewart-Cassiar Highway runs from the junction of Highway #16 (The Yellowhead Route) north to the Yukon border and connects with The Alaska Highway.This highway offers some of the most awe-inspiring scenery, with wild rivers, deep canyons and wildlife that you will encouter along the way.