Thousand Islands – Frontenac Arch is one of four ecoregions of the Mixedwood Plains. The Thousand Islands in the Saint Lawrence River have a distinctive flora and fauna and are a part of the biological corridor. The bedrock is mostly gneiss, granite and marble, more than a billion years old. The Frontenac terrain is the youngest of the Ontario portions of the arch, dated at 1.2 billion years old. These rocks were once part of a large mountain chain of the ancient supercontinent of Rodinia. There is also a meteor crater near Holleford, where the shield meets the limestone plains of southeastern Ontario. The area
Leeds and the Thousand Islands is at the north west corner of the Township of Leeds and the Thousand Islands and is most known for fishing and its direct access to the UNESCO designated Rideau Canal. The village was established early in the 19th century as a port of call for steamers going between Kingston and Ottawa on the Rideau Canal. Located just off Highway 15, about 20 minutes north of the 401 Highway, it still serves as the first full service port of call for boaters coming north on the Rideau. Population trend: Mother tongue: Leeds and the Thousand Islands Leeds and the Thousand