Carcross Desert, located outside Carcross, Yukon, Canada (60°11′14″N 134°41′41″W / 60.18722°N 134.69472°W / 60.18722; -134.69472Coordinates: 60°11′14″N 134°41′41″W / 60.18722°N 134.69472°W / 60.18722; -134.69472), is often considered the smallest desert in the world. However, the Desert of Maine, another similar false "desert", has an area of 40 acres (160,000 m2). The Carcoss Desert measures approximately 1 square mile (2.6 km2), or 640 acres.
Carcross Desert is commonly referred to as a desert, but is actually a series of northern sand dunes. The area's climate is too humid to be considered a true desert. The sand was formed during the last ice age, when large glacial lakes formed and deposited silt. When the lakes dried, the dunes were left behind. Today, sand comes mainly from nearby Bennett Lake, carried by wind. The dunes contain a wide variety of plants, including unusual varieties such as Baikal sedge and Yukon lupine, among others.
The Yukon Territorial government made efforts to protect Carcross Desert in 1992, but failed due to opposition from locals who use the dunes for recreational purposes.