An Essroc ship pulls up to the Essroc cement plant. There are large quarries there where they quarry limestone. The escarpment along that shore is due to the Picton Fault line which runs from Lake Ontario, past here, up the Napanee River and north past Sharbot Lake. It is not dangerous, but it periodically rumbles. Its source begins deep in billion year old basement precambrian rock.

An Essroc ship pulls up to the Essroc cement plant. There are large quarries there where they quarry limestone. The escarpment along that shore is due to the Picton Fault line which runs from Lake Ontario, past here, up the Napanee River and north past Sharbot Lake. It is not dangerous, but it periodically rumbles. Its source begins deep in billion year old basement precambrian rock.