Home States  Colorado  Connecticut  Maine  Massachusetts  New Hampshire  New York  Rhode Island  Utah  Vermont  View All Lists  NE 4,000 Footers  NE 100 Highest  NH 4,000 Footers  NH 100 Highest  NH 52 With A View  NH Belknap Range  NH Ossipee 10 Links Trail Conditions Trip Log  Sunrises  Sunsets About Mt. Institute Hawley, MA Mt. Institute as seen from Negus Mountain Summary Mt. Institute, better known as Thunder Mountain or Berkshire East, is a steep but rewarding climb from Charlemont. Though the 1,538 foot summit only offers an unobstructed view to the west, there are lookouts to the north, northwest, and southwest within five minutes of the top. Horace Mann named the mountain while working across the river from it in Charlemont. Summit Elevation 1,538 feet Summit Facilities None. Trip Reports: Click on the date for photos, timestamps, and maps. Date of Hike Trail(s) Length Steepness Vertical April 30, 2019 Thunder, more Moderate Difficult 965' April 16, 2017 Mohawk, more Moderate Difficult 965' August 6, 2015 Mohawk, more Moderate Difficult 965' September 11, 2013 Mohawk, more Moderate Difficult 965' August 21, 2010 Mohawk, more Moderate Difficult 965' October 18, 2008 Competition, more Moderate Very Difficult 978' September 8, 2007 Competition, more Moderate Very Difficult 978' March 29, 2007 Flying Cloud, more Moderate Very Difficult 1,005' January 21, 2007 Mohawk, more Moderate Difficult 965' January 16, 2007 Mohawk, more Moderate Difficult 965' January 10, 2007 Mohawk, more Moderate Difficult 965' January 7, 2007 Minnie Dole, more Moderate Very Difficult 961' December 31, 2006 Roundabout, more Moderate Moderate 983' December 16, 2006 Mohawk, more Moderate Difficult 971' December 2, 2006 War Dance, more Moderate Difficult 961' October 27, 2006 Mohawk, more Moderate Difficult 1,031' September 22, 2006 Competition, more Moderate Very Difficult 970' More Information SkiBerkshireEast.com Berkshire East - NewEnglandSkiHistory.com Berkshire East Ski Area - Official site Copyright 2002-2021, All Rights Reserved. www.FranklinSites.com