Lake Peto (Peyto Lake) is a glacial lake in Banff National Park in the Rocky Mountains of Alberta, Canada, which can be reached directly by ice sheet road. Compared with other lakes in Banff National Park (Banff National Park), Peyto Lake is “only visible and not molested”. Because it is narrow and surrounded by steep cliffs and dense forests, there is almost no way to get close to the lake, so it can only be a bird's-eye view from the mountain far down. Lake Peto is on the roadside of Icefield Avenue in Jasper Road Banff, and the car can park in the parking lot or on the hillside, and there is still a distance to the mountain viewing attractions. We went in early October. It was snowing a few days ago. There were ice cubes on the road to the viewing spot. It felt good to look down at the blue lake. But the color of this lake is very beautiful, Peto Lake is like a jasper belt worn on Rocky Mountain, green and dripping, adding a lot of color to Rocky Mountain.