Petroforms, also known as boulder outlines or boulder mosaics, are human-made shapes and patterns made by lining up large rocks on the open ground, often on quite level areas. Petroforms in North America were originally made by various Native American and First Nation tribes, who used various terms to describe them. Petroforms can also include a rock cairn or inukshuk, an upright monolith slab, a medicine wheel, a fire pit, a desert kite, sculpted boulders, or simply rocks lined up or stacked for various reasons. Old World petroforms include the Carnac stones and many other megalithic monuments.

Whiteshell Provincial Park is a provincial park in southeast Manitoba, approximately 120 kilometres (75 mi) east of the city of Winnipeg. The park is considered to be a Class II protected area under the IUCN protected area management categories. It is 275,210 hectares in size.