Did you know that the second Sunday of September is International Rock Flipping Day? We’re celebrating a few days early with a walk through the conservation land to flip some rocks and explore the tiny and mysterious worlds underneath! Visit the IRFD website to take a look at what others have discovered and post your own photos: http://rockflipping.org/.

Please note that the conservation land trails are not ADA or stroller accessible; please wear appropriate footwear and clothing. For more information on Great Hill, please visit http://www.actontrails.org/great-hill/.

Sponsored by Blue Cross Blue Shield of Massachusetts.