I found this mark cut into a fat block of granite, part of a centuries-old colonial post road embankment two miles back in the woods of Chesterfield, MA.
A vernal pool half a mile southwest of Bull Hill, in Sunderland, MA.
Man-made, purpose uncertain. Millhouse ruin, Chesterfield Gorge, Chesterfield, MA
Man-made, functional – colonial bridge piling. Chesterfield Gorge, Chesterfield, MA
A hornet’s nest that looks like a skull.