Ossipee Fieldtrip /
Pawtuckaway Ring Dike

The Pawtuckawy volcanic ring dike is farther south in New Hampshire than the Ossipee dike. The former is smaller as well.  There are trails on the "back side" which don't require entering the State Park. The Tower trail, Soundboard, or Boulder trail are possibilities.  There are cemetaries, old foundations, and caves to explore.