Thousand Islands – Frontenac Arch Thousand Islands – Frontenac Arch The Thousand Islands – Frontenac Arch region or the Frontenac Axis is an exposed strip of Precambrian rock in Canada and the United States that links the Canadian Shield from Algonquin Park with the Adirondack Mountain region in New York, an extension of the Laurentian mountains of Québec. The Algonquin to Adirondacks region, which includes the Frontenac Axis or Arch, is a critical linkage for biodiversity and resilience, and one with important conservation potential. The axis separates the St. Lawrence Lowlands and the Great Lakes Lowlands. It has many distinctive plant and animal species. It
Leeds and the Thousand Islands Island, Halsteads Bay, Holland, Ivy Lea, Junetown, La Rue Mills, Lansdowne, Leeds, Legge, Long Point, Lyndhurst, Maple Grove, Mitchellville, Narrows, Oak Leaf, Outlet, Pooles Resort, Quabbin, Rockfield, Rockport, Sand Bay Corner, Seeley's Bay, Selton, Soperton, Sweets Corners, Taylor, Tilley, Union, Warburton, Washburns Corners, Waterton, Willowbank and Wilstead. Lansdowne, Ontario is a small town located just north of Ivy Lea, Ontario and 4 km north of Highway 401, at the intersection of Leeds and Grenville County Roads 3 and 34. It is a part of the township of Leeds and the Thousand Islands, Ontario. It can be accessed by former Kings