Boundary rock is really a boulder not a cliff... There are two bolted routes on it, they check in at 5.8 and 5.8+... the climbing is slabby for the most part with a few steeper moves... They are fine routes but not really worth the hike unless you are like me and want to climb every route you can... If you are looking for a reason to check them out it might be the only place you can climb a couple 5.8's on a busy Saturday and be pretty damn sure you will have the place to your self... Might be a good warm up if you are on your way by to one of the other western crags up that trail...
Getting There
From the Black Jack Boulders hike the main trail that heads west out of the boulders and heads out to the Northwest Territories...About halfway to the NW Territories look for a cairn (rock pile) beside the trail and a large boulder to your right about 100ft off trail (cant really see it well when there are leaves on the trees)... The trail that leads to the right and out to the rock isn't obvious so keep your eyes peeled...