Park
Madison Boulder Natural Area in Madison, New Hampshire, protects a 17-acre site featuring North America's largest known glacial erratic—a massive granite boulder measuring 83 feet long, 23 feet high, 37 feet wide, and weighing over 5,000 tons, deposited by glaciers around 14,000 years ago.
Designated a National Natural Landmark in 1970, it offers a short, easy 0.5-mile loop trail from the parking lot off Boulder Road, winding through woods past streams and smaller erratics to viewpoints around the enormous rock for hiking, photography, and education on Ice Age geology.
Always open and unstaffed with no facilities beyond parking and interpretive signs, it's ideal for quick family visits near the White Mountain National Forest.
| Address | 473 Boulder Rd, Madison, NH 03849, United States |
| Phone | +1 603-227-8745 |
Madison Boulder Natural Area is located in New Hampshire, United States.
Madison Boulder Natural Area is situated in the state of New Hampshire.
The main phone number for the Madison Boulder Natural Area is +1 603-227-8745.
The address of Madison Boulder Natural Area is 473 Boulder Rd, Madison, NH 03849, United States.
Yes, Madison Boulder Natural Area is family-friendly and attracts visitors of all age groups.
Visitors usually spend a few hours to a full day exploring Madison Boulder Natural Area.
Yes, there are several hotels and accommodations near Madison Boulder Natural Area in New Hampshire.
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