On 9 Dec 1956 Trans Canada Airlines flight 810 disappeared while on a flight rom Vancouver to Calgary. Five months later climbers found the crash site near the summit of Slesse mountain. The hike up to the memorial plaque is an easy walk. Reaching the Propeller Cairn is a little more challenging but you are rewarded with panoramic views of the Delusion, Illusion and Rexford peaks across the valley while the imposing ramparts of Slesse Mountain itself towers above you.