Below are links you may find to be of interest:
Environmental sites:
Natural Heritage & Endangered Species Program (Mass Wildlife)
Massachusetts Environmental Strike Force (Department of Environmental Protection)
Mass Audubon
Mittineague Park - lots of great photos
New England National Scenic Trail (also known as the Metacomet Monadnock Trail / M&M Trail)
Boston Museum of Science - "Firefly Watch": citizens nationwide report sightings of fireflies
Firefly populations in Massachusetts are changing. In North America there are about 175 species of fireflies.
You can help document firefly populations by going to this site: https://www.mos.org/fireflywatch/
Vernal Pool resources:
Massachusetts Division of Fisheries & Wildlife certification March 2009 guidelines / form