Atlin Lake, Tagish Lake, Marsh Lake, Lake Laberge, Kusawa Lake and Kluane Lake. Bennett Lake on the Klondike Gold Rush trail is a lake flowing into Nares Lake, with the greater part of its area within Yukon. Other watersheds in the territory include the Mackenzie River, the Peel Watershed and the Alsek–Tatshenshini, and a number of rivers flowing directly into the Beaufort Sea. The two main Yukon rivers flowing into the Mackenzie in the Northwest Territories are the Liard River in the southeast and the Peel River and its tributaries in the northeast. Canada's highest point, Mount Logan (), is in the territory's southwest. Mount Logan and a large part of the Yukon's southwest are in Kluane National Park and Reserve, a UNESCO World Heritage Site. Other national parks include Ivvavik National Park and Vuntut National Park in the north. Notable widespread tree species within the Yukon are the black spruce and white spruce. Many trees are stunted because of the short growing season and severe climate. Climate While the average winter temperature in the Yukon is mild by Canadian arctic standards, no other place in North America gets as cold as the Yukon during extreme cold snaps. The temperature has dropped down to three times, 1947, 1952, and 1968. The most extreme cold snap occurred in February 1947 when the abandoned town of Snag dropped down to . Unlike most of Canada where the most extreme heat waves occur in July, August, and even September, the Yukon's extreme heat tends to occur in June and even May. The Yukon has recorded three times. The first time was in June 1969 when Mayo recorded a temperature of . 14 years later this record was almost beaten when Forty Mile recorded in May 1983. The old record was finally broken 21 years later in June 2004 when the Mayo Road weather station, located just northwest of Whitehorse, recorded a temperature of . History Long before the arrival of Europeans, central and southern Yukon was populated by First Nations people, and the area escaped glaciation. Sites of archeological significance in the Yukon hold some of the earliest evidence of the presence of human habitation in North America. The sites safeguard the history of the first people and the earliest First Nations of the Yukon. The volcanic eruption of Mount Churchill in approximately 800 AD in what is now the U.S. state of