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 Playhouse Thousand Islands Playhouse The Thousand Islands Playhouse is a summer theatre company located in Gananoque, Ontario, Canada. It was founded in 1981 by Greg Wanless and a group of local actors and graduates from Queen's University including Timm Hughes, Joan Gardiner, Mo Bock, and Kathryn Mackay. Artistic Director Wanless and Assistant Artistic Director Mackay retired at the end of the 2012 season. The current Artistic Director is Ashlie Corcoran, and the Associate Artistic Director is Rob Kempson. Thousand Islands Playhouse operates two theatres, the former Gananoque Canoe Club building as the 348-seat Springer Theatre in which musicals and larger plays