Field Trip Guides

  • Crescent Lake east end
  • Geology interpretive signs at Port Townsend area state parks
  • Olympic West Coast – Beach 4
  • Olympic West Coast – Ruby Beach
  • Hurricane Ridge Road and Hill Trail in Olympic National Park

Crescent Lake Field Guide

by James Aldrich Ph.D. – Sept. 2013 co-authors Paul Loubere and Michael Machette [to read/print the whole Olympic Field Guide,… Read moreCrescent Lake Field Guide


State Park Geology Signs

Using donations received from the folks who attend our events, the Jefferson Land Trust Geology Group has produced and donated… Read moreState Park Geology Signs