Maligne Lake is a lake in Jasper National Park, Alberta, Canada. It is famed for the colour of its water, the surrounding peaks, the three glaciers visible from the lake and Spirit Island, one of the most photographed locations in the world. The lake is located 44 km (27 mi) south of Jasper town, and is accessible by motor vehicle, including shuttle buses from Jasper. Boat tours run to Spirit Island in the spring to autumn season. The 44 km Skyline Trail, Jasper's most popular, highest and above treeline, multi-day hike, begins at Maligne Lake and finishes near the town of Jasper. Other popular day hikes include the Opal Hills and Bald Hills loops. Winter activities include cross-country skiing.
Maligne Lake is the largest lake in Jasper National Park. The valley in which the lake lies was carved and excavated by valley glaciers, and the lake has been dammed at its northern end by an end moraine deposited by the last glacier, which flowed down the valley towards the Athabasca River. The glacial deposits and landforms forming the end moraine are excellent examples of glacial deposition