Yoho National Park is the smallest of the Canadian Rockies National Parks. It is said to offer some of the most beautiful backcountry terrain, especially around Lake O'Hara, but I haven't had yet a chance to explore it, since access is limited and requires long advance planning. The main roadsite attraction of Yoho National Park is Takkakaw Falls, which ranks as one of the highest (254 meters) waterfalls in both Canada and the world.
Yoho National Park, together with neighbor parks (Banff, Jasper, Kootenay) form a huge protected area of the Canadian Rockies that is a UNESCO World Heritage Site.
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