I was just up on Stuart last weekend. So this is still fresh in my mind. At the intersection of the trail down from Longs Pass and Ingalls Creek Trail, take a right. Head east on Ingalls Crk Tr. about 1/4 mi. to a large clearing. At the western edge of this clearing there is a forest service sign "No Campfires above 5000'" A few yards past this sign, a way trail ascends to the left (N) uphill into the brush. This trail is pretty easy to follow and will take you up into the Cascadian Couloir. There is a way trail and cairns all the way up the couloir. Have Fun!