Castle Mountain showing the hut and the route.  The Upper Brewer Buttress is 1000′ feet of sustained , vertical, moderate climbing over good rock.   An excellent route.  We went too far north to descend back to Goat Plateau  and it turned out to be a race to outrun a thunderstorm.  Apparently an easy mistake to make.  The summit plateau is a huge expanse of  unglaciated terrain.

The hut is perched on a spectacular precipice overlooking the Bow River Valley.  The stylish and Frank Gehry-esque outhouse  is like “totally awsome …dude” and itself well worth the hike in.