Rockwood is the main community in the township of Guelph-Eramosa. A rapidly-growing community, it is located on Highway 7 between Acton and the city of Guelph. The Eramosa River runs through the centre of town and is the reason for Rockwood's existence - having been the source of power for several mills that were the economic engine that spawned the original settlement. Limestone was also extracted from what is now the nearby Rockwood Conservation Area at that time. The conservation area is used for swimming, hiking, canoing, picnicking and camping from last Friday in April to the Sunday following Thanksgiving and it has has over 65,000 visitors a year ^[2].

The township also includes the smaller communities of Ariss, Armstrong Mills, Birge Mills, Blue Springs, Brucedale, Centre Inn, Eden Mills, Eramosa, Everton, Marden, Mosborough and Rockcut.

source: (http://en.wikipedia.org/wiki/Rockwood,_Ontario)