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2. www.nhstateparks.org › find-parks-trails › madisonMadison Boulder Natural Area - NH State Parks

   www.nhstateparks.org › find-parks-trails › madison

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   Madison Boulder Natural Area is home to the largest known glacial erratic in North America, and among the largest in the world. Madison Boulder is a huge granite rock measuring 83 feet in length, 23 feet in height above the ground, 37 feet in width, and weighs upwards of 5,000 tons!

3. www.visitnh.gov › attraction › 8192Madison Boulder Natural Area - Visit NH

   www.visitnh.gov › attraction › 8192

   Attraction Details. Route 113, Madison, NH 03849. Directions. Call. Email. Website. Largest known glacial erratic in New England, and among the largest in the world. A granite rock 83 feet long, 23 feet high (plus an additional 10-12 feet below ground), and 37 feet wide, weighing up to 5,000 tons!

4. blog.nhstateparks.org › glaciers-in-new-hampshireGlaciers in New Hampshire - NH State Parks

   blog.nhstateparks.org › glaciers-in-new-hampshire

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   Sep 28, 2022 · Madison Boulder Natural Area. New Hampshire is famous for having the largest glacier erratic in all of North America. It is located in Madison, New Hampshire. Madison Boulder Natural Area is a great spot to check out if you are nearby in the eastern White Mountains region.

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5. www.des.nh.gov › madison-boulder-brochure-v03Madison Boulder Natural Area - NH Department of Environmental ...

   www.des.nh.gov › madison-boulder-brochure-v03

   The ice transported the boulder, smoothing its edges, and left it sitting on a different type of rock, called the Concord Granite. A glacial boulder sitting on bedrock of a different type is known as a glacial erratic.

6. www.nhstateparks.org › Our-Glacial-PastMadison Boulder - NH State Parks - Home

   www.nhstateparks.org › Our-Glacial-Past

   The great glacial boulders we find when rambling across New England’s countryside are an integral part of our history, past and present. Other signs also reflect and illuminate our glacial past. The swamps and bogs that formed in unsorted glacial debris, U-shaped valleys like the Pinkham, Crawford and Franconia Notches carved by glacial ice, precipitous waterfalls, striated rocks scraped by ...

7. www.atlasobscura.com › places › madison-boulderMadison Boulder – Madison, New Hampshire - Atlas Obscura

   www.atlasobscura.com › places › madison-boulder

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   Mar 18, 2010 · A very big rock just plopped down in the New England woods. Been Here? Want to Visit? Madison Boulder is thought to be the largest glacial erratic - an erratic being a boulder of a certain...

8. www.visitwhitemountains.com › listing › madisonMadison Boulder Natural Area | Madison, NH

   www.visitwhitemountains.com › listing › madison

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   Madison Boulder Natural Area is home to the largest known glacial erratic in North America, and among the largest in the world. Madison Boulder is a huge granite rock measuring 83 feet in length, 23 feet in height above the ground, 37 feet in width, and weighs upwards of 5,000 tons! The 17-acre site was acquired by the state of N.H. in 1946.