Beautiful spot. We were through there a few years ago, PE (pre-Escape) in the Boler. Only on the Alberta side, though.
Not too far away is another spot we really liked -- Writing-on-Stone Provincial Park. Can look across the "border" to Montana's Sweetgrass Hills from there.
Great hiking both spots.
Lotar & Wendy
"Sit loosely in the saddle of life" (Robert Louis Stevenson)