Tzela Mountain sits above the north side of Tzela Lake. To the north of it, Shepherd Creek runs from Milla Lake north-west to Buttle Lake. It is an isolated summit requiring at least 2 days by most parties to reach.
Tzela Mountain may be approached from the south or west to reach the south ridge by which the mountain may be climbed. From Tzela Lake to the south, hike directly into the pass between Mt. Harmston and Tzela Mountain.
Above the pass the route head left to a rising ledge system that leads through a lower rock band to easier ground. Hike up heather slopes and around little bluffs to about 1700m and the base of a prominent cliff. To the right is a very steep and exposed snow gully. Traverse to the left toward the south side of the mountain under the base of the cliff band. Go round a ridge at the south east corner of the peak and traverse band of scree to the base of a very prominent, green, vegetated gully. Scramble up this gully.
Steep easy heather leads to a wall of mountain hemlock crumholz. Squeeze against the righthand rock wall of the gully to easy ground up the top of the gully onto a flat ridge crest. The ridge doglegs to the left around the top of the huge steep snow gully seen further down. Easy walking up and right, above the cirque leads to another bluff. Steep low 5th class moves. 5.6, maybe just 5.5, onto some black basalt. A bit of 4th class above leads to the top and a surprisingly impressive summit cairn. Descend the same route.