Started at Island Lake trailhead, then on past Jasper, Triskele, Maryott, Flat Rock, and Cladocera Lakes. Then camped at Snowbank Lake for summit hike. Easy route to summit from the SE. Great views of Granite Peak and Mt Wood from the summit.
SE of Snowbank Lake are excellent examples of the 3+ billion year old rock that is said to be the first continental crust that formed on the planet. The age makes this rock among the oldest on earth.
Another route to Snowbank Mtn takes you past Varve Lake, Navajo Tarn Lake, up across the Castle Rock Glacier and across the plateau south of "West Castle Peak".
Plenty of great lightning and thunder storms to be experienced at these upper elevations, with the thunder echoing almost endlessly up and down the valleys, lightning striking above and below you, and wind blown rain & hail pounding so hard you cannot hear thunder directly overhead.
Nothing too difficult, just patience and stamina required. And I have to say, the easiest way to climb a Beartooth 12er is to just follow Matt. Third summit and always a pleasure.
Vince and I did this over a 3 day trip. There was 3-6 inches of fresh snow above 10,500 feet making the miles of off-trail talus travel much more difficult. We camped at Wright lake, making our summit day 16 miles long. The first day we had snow all day but the second two days were great.