Acadia CompassMount Desert Island, Maine
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Thunder Hole

Trapped air booms as the sea rushes into a slot in the rock.

High tide windowLoading tide
easy Kid friendly Busy in season Road closed to cars Dec 1 to Apr 14 Island Explorer: Thunder Hole
Stay behind the rail; spray has topped 40 feet.

Go one to two hours before high tide with a swell running and the cove booms and throws spray; go at low water on a calm day and it is a quiet notch in the ledge. An 1867 guidebook called it Thunder Cave. The park's first ranger station, a 1934 WPA building, stands beside it.

EraRusticators · CCC years
Seasonloop road season
Coordinates44.32101, -68.18933
Source of positionNPS
Directions