The mood of the River Fowey changes constantly with the tide. Here it's a summer's day at high tide and the stillness of the river is apparent. Many Celtic monks decided to settle along the estuary banks, leading lives of prayer, service and evangelism. Many performed miracles of healing and deliverance over evil. Today, their presence is marked by the medieval churches dotted around the river banks, built on the sites of these prayer oratories and still pervading the still and peaceful presence of God.