Thunder Hole
January 15, 2006
Provided and copyright by: Keith McKain, Colonel Richardson High School, MD
Summary authors & editors: Keith McKain
Thunder Hole in Acadia National Park was carved by the relentless pounding of seawater -- the "hole" is about 8-10 feet (2.5 to 3 meters) wide. If visitors arrive as the rising tide surges into the narrow chasm shown above, the captured air is compressed and resounds with a boom that's felt as well as heard. It seems as though the best time to hear it is at three quarter rising tide with a rough sea. During storms, water has been observed to "shoot" 40 feet (12 m) in the air. The photo was taken on August 11, 2005.
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