Brent crater

The Brent crater is an impact crater in both the geographic township of Deacon, Unorganized South Nipissing District and the municipal township of Papineau-Cameron in Nipissing District, northeastern Ontario, Canada, located north of Cedar Lake in northern Algonquin Provincial Park. It is 3.8 kilometres in diameter and the age is estimated to be ca. 453 million years. The crater can be reached using Brent Road, 32 kilometres south of Ontario Highway 17.

A sign, erected at the site by the Archeological and Historic Sites Board, Archives of Ontario, reads:

Source: Wikipedia