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 are performed, and a black-box theatre, the 140-seat Firehall Theatre in which smaller, experimental plays are produced. The Thousand Islands Playhouse's programming also includes a Playwrights’ Unit with workshop productions for the public, a touring show performed by their Young Company, and the Studio ‘S’ Classical Music Series. The company has also recently renovated a new premier production facility. The Playwrights’ Unit is a year-long residency program to nurture promising playwrights. The selected writers create new plays while having the Playhouse audience and resources of both the Springer Theatre and Firehall Theatre in mind. During the month of December, the