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All the United States New Hampshire Madison Madison Boulder

Madison Boulder

A very big rock just plopped down in the New England woods.

Madison, New Hampshire

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Madison Boulder Natural Area in Madison, New Hampshire, USA   nhgeology.org
Madison Boulder Natural Area in Madison, New Hampshire, USA   nhgeology.org
One Man vs. Glacial Erraticism   Willymjr / Atlas Obscura User
  e1savage / Atlas Obscura User
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About

Madison Boulder is thought to be the largest glacial erratic - an erratic being a boulder of a certain type of rock that was transported by glacial ice and deposited on bedrock of different type of rock - in North America.

At 23 feet high, 37 feet front-to-back, and 85 feet left-to-right Madison Boulder is estimated to weigh almost 12 million pounds, roughly the weight of 36 blue whales. It was once part of a ledge of Conway Granite and was transported about two miles south to its current location where it now sits on a deposit of Concord Granite.

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Natural Wonders Geological Oddities Geology Nature

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If you follow the signs to the park you'll end at a small parking lot. It's about 10 minutes down the trail to the boulder.

Community Contributors

Edited By

lawfastfoodorder, jecbuilding, e1savage, harryandkathy...

  • lawfastfoodorder
  • jecbuilding
  • e1savage
  • harryandkathy
  • bluestargirl
  • Amy s
  • Willymjr
  • fasteddiez80

Published

March 18, 2010

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Sources
  • www.nhgeology.org
  • www.nhstateparks.org
Madison Boulder
473 Boulder Rd
Madison, New Hampshire, 03849
United States
43.934118, -71.16276
Visit Website
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