Why is it called Fourth Canyon? Early travellers began their river journey at Nahanni Butte and came upstream, and so they numbered the canyons as they encountered them. Each canyon has distinctive features. Here we have relatively solid limestone and wonderful colours in the rock.
Unlike the Grand Canyon, which began as a high plateau and was cut by the Colorado River, the Nahanni was here long before the mountains rose up around it.
Our reward at the end of this beautiful day? Grey skies and a wet campsite.
But the journey has just begun, and we’re a hardy bunch. Next post: Third Canyon.