• Home
  • Bela Brook
  • Kimball Pond
  • Kuncanowet Forest
    • Elementary School Trails
    • Stone Farm
  • News
  • About
Menu

Dunbarton Conservation

Welcome
  • Home
  • Bela Brook
  • Kimball Pond
  • Kuncanowet Forest
  • Conservation Easements
    • Elementary School Trails
    • Stone Farm
  • News
  • About

New biggest boulder In Dunbarton re-discovered!

June 20, 2016

A new 13 Wonder has been found. It is one big glacial boulder! Our boulder-chaser teeam measured a circumference of approx. 95 feet, which translates to an average diameter of 30 feet.  As best lour experts could measure, the maximum height is about 20 feet.  Using the a horizontal radius of 15 feet and a vertical radius of 10 feet, the approximate ellipsoidal volume is 4/3* pi*15*15*10, which is approximately 9,400 cubic feet.

Assuming that the granitic rock weighs approx. 175 pounds per cubic foot, the boulder weighs approx. 1.65 million pounds, or approx. 825 tons!  Previously measured boulders in Dunbarton weighed in the range of 100 Tons.  We have a winner.
 
Thanks to Orrie Dawson of Goffstown who provided the directions to the location of the biggest boulder in Dunbarton which was mentioned in Alice Hadley's classic history of our town, Where the Winds Blow Free.

The commission will organize a hike to it later this year.

← Canoeing on Kimball PondThe Stone Farm →
Get notices of our hikes & trail days

The 13 Wonders of Dunbarton

The Bela Brook Conservation Area (Grapevine Road)

Kimball Pond Conservation Area (Kimball Pond Road)

Kuncanowet Town Forest and Conservation Area (Holiday Shore Drive)

Winslow Town Forest (Stark Lane) 

Stark Cemetery (Mansion Road)

Hopkinton Everett Flood Control Area (Everett Dam Road)

Long Pond (Long Pond Road)

Purgatory Pond (Purgatory Pond Road)

View from Burnham Hill (Rt. 13)

Rogers and Putney home sites (Robert Rogers Road)

Highest Point in Dunbarton and view from Mills Hill (Rt. 13) 900 feet).

Biggest boulder in Dunbarton (off powerlines on east side of Kimball Pond Rd.)

Geographic Center of New England (Stone Farm, Guinea Rd.)

Get your 13 Wonders Card