Sea cave
Blue water.
GoginkLobabi — CC BY-SA 4.0 · VictoriardPC — CC BY-SA 4.0 · DukeOfEuphony — CC BY-SA 4.0 · Derek Hatfield from Peterborough, Canada — CC BY 2.0 · HiveHarbingerCOM — CC BY 3.0
The Grotto is a sea cave in a limestone cliff on the Georgian Bay shore, in Bruce Peninsula National Park. Clear turquoise water fills the cave, linked to the lake by an underwater tunnel, surrounded by grey-white rocks and green forest. The park lies on part of the Niagara Escarpment, covers 156 square kilometres and is one of the largest protected areas in southern Ontario, the core of UNESCO's Niagara Escarpment Biosphere Reserve. It was created in 1987 to protect the rock formations and shoreline. It is known for crystal-clear blue water, cobble beaches, cliffs and karst formations, and connects to the long-distance Bruce Trail. You walk about an hour through the forest to the shore, then climb carefully down the rocks into the cave; some visitors swim in the cold water. It is about 11 km in a straight line east of Tobermory. Parking must be booked ahead in summer, and the scramble into the cave is tricky, so wear sturdy shoes.
Blue water.
On the bay.
To the shore.
Bruce Peninsula National Park, Ontario
Yes, parking in summer.
Yes, but the water is very cold.