Thousand Islands level year-round, and support at least two living trees. The Thousand Islands archipelago is located at the outlet of Lake Ontario at the head of the Saint Lawrence River. The region is bisected by the Canada–United States border and covers portions of Jefferson and St. Lawrence counties in the U.S. state of New York, in addition to parts of the United Counties of Leeds and Grenville and Frontenac County in the Canadian province of Ontario. Geologically, most of the islands are located where a branch of the Canadian Shield runs south across the river to join with the Adirondacks. The
Thousand Islands (Svalbard) Thousand Islands (Svalbard) Thousand Islands () is a group of small islands south of Edgeøya. They form part of the Svalbard archipelago. The group consists of over forty islands and islets, including Brotskjer, Kulstadholmane, Utsira, Tufsen, Kong Ludvigøyane, Bölscheøya, Hornøya, Tiholmane, Meinickeøyane, Sletteøya, Schareholmane, Skråholmen, Brækmoholmane, Tareloppa, Vindholmen, and Menkeøyane. The Dutchman Joris Carolus was the first to distinctly mark a group of small islands south of Edgeøya. The Muscovy Company's map (1625) showed a vague mass of islands as well, some labeled, such as "Wester I.", "Beare Iland", "Heling I.", and the "Hopeless Iles." (perhaps Kong Ludvigøyane). The cartographers