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) 1982, some of the islands in the Kecamatan of North Thousand Islands are declared a Marine National Park under the name "Taman Nasional Laut Kepulauan Seribu" or "Thousand Islands Marine National National Park". The Kecamatan of Kepulauan Seribu Utara is divided into three Kelurahan (administrative villages): Kelurahan Pulau Panggang, Kelurahan Pulau Kelapa, and Kelurahan Pulau Harapan. The Kelurahan (administrative village) of Pulau Panggang (postal code 14530) makes up the southern part of the Kecamatan of Kepulauan Seribu Utara. Officially, the Kelurahan contains 13 islands. Pulau Panggang was officially inaugurated as the administrative center of the Kelurahan Pulau Panggang in August