How many preserves & forests are in Auburn, MA?
2 preserves & forests in Auburn, MA are listed here: Granger Ledges, Pakachoag Hiking Trail. Each page has parking, entry fees, and hours where they are confirmed, and says so where they are not.
Which preserves & forests in Auburn, MA are free to enter?
Pakachoag Hiking Trail. Free entry is confirmed for this one; the others either charge or have no confirmed fee on record.