Elm Point

Elm Point, Minnesota, in Lake of the Woods County, Minnesota, is a small uninhabited cape and a United States practical exclave, southwest of the Northwest Angle, near the Indian/First Nation community of Buffalo Point. It borders Canada's province of Manitoba at the 49th parallel, and there is a line of felled trees along the 49th parallel marking the international border.[1] The cape is separated from the rest of the continental United States by Lake of the Woods.

In addition to Elm Point, there are a few small parcels of land including Buffalo Bay Point that extend about 100 metres south of the 49th parallel, west of Elm Point but east of the contiguous land mass of Minnesota, which would therefore be U.S. territory.

Wikipedia