I took a group of Pathfinders (Girl Guides ages 12-14) to Waterton Park for a day of snowshoeing and needed a place to base from and get out of the weather. Park staff recommended the "Little Prairie" picnic shelter, on the Akamina Parkway road just a few kilometres north of Cameron Lake. It was a great spot - nothing fancy, but a nice, sturdy little cabin with two picnic tables and a wood stove. It was just what we needed to enjoy our lunch and warm up after a good outing. There was a reasonably clean chemical toilet (with paper and sanitizer) nearby and a good supply of firewood. Only thing is, the wood was a little damp from being locked up in a snowy cabin, so you might want to bring a few sticks of your own wood with kindling to get your blaze started.
There is a trail head right at that spot, plus several others along the parkway. 1-2 hours hike to Cameron Lake, depending on your method of travel and fitness. The road is closed and not plowed in the winter, so you also have that option if you want to be more in the open. Scenery was spectacular - a great place to spend a day with a small or larger group.
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