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
Thousand Islands (Indonesia) Minister of Agriculture in 1982 and designated by a Forestry Ministerial Decree in 2002 as the "Taman Nasional Laut Kepulauan Seribu" (Thousand Islands Marine National Park). Public access is prohibited on two of the islands, Panjaliran Barat and Panjaliran Timur, where sea turtles are conserved. The Thousand Islands Marine National Park is located north of Jakarta. It is mostly located on the Kecamatan of Kepulauan Seribu Utara (subdistrict of North Thousand Islands), which is the northern part of the Thousand Islands. The complex contains 342 reef platforms, with 110 forming an island larger than half an acre. There may be