Heading north on the Icefields Parkway between Athabaska Falls and the Jasper townsite we pulled into a small parking area on the right. A couple of truckloads of young people suggested that we hike into the lake for a swim or just a look. I didn’t see a sign for the name of the lake and the trail was not marked but we took their advice – because THEY had been swimming there. I’ve not been able to find the name of the lake on Google Maps or the Jasper National Park brochure I brought home. However, a thoughtful reader – see the comment below – named it as Horseshoe Lake. And if you Google that, the pictures people have posted match the sights we saw.
PS. We didn’t swim.