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 Secondary School Tennessee, Louisiana, and North Carolina. To this day no other school in Ontario has produced more scholarships in one year than the Pirates. Thousand Islands Secondary School hosted the OFSAA track and field meet in June of 2012, it is one of the biggest track and field meets in North America. The girls basketball program has captured three OFSAA championships, and has won the EOSSAA title 7 of the past 12 years. Stacey Dales (WNBA, Canadian Women's Olympic Basketball Team), and Kendra Walker-Roche (Fresno State, NCAA) are just 2 of the many post-secondary players who developed their skills at TISS.