Eganville is a small community occupying a deep limestone valley carved at the Fifth Chute of the Bonnechere River in Renfrew County, Ontario, Canada. It is in the township of Bonnechere Valley. This village also has two of the most popular restaurants in the upper Ottawa Valley: The Granary (Austrian cuisine) and Frisco's Grill. In 2009, Eganville became the home of the Stone Fence Theatre's productions of local historical and musical dinner theatre. The Bonnechere Valley is also a gateway to some of north eastern Ontario's most well known tourist destinations. Including the nearby Bonnechere Caves. The caves are located under a hill of limestone, said by geologists to have been the bottom of a tropical sea 500 million years ago. Eganville is also a stop off to destinations into central Ontario. Hwy.