 Hills on the reservation include Shrub Hill, Boston Hill, and the Holt Hill drumlin, named for the 17th-century settlement of Nicholas Holt, which offers 280 degree views of Boston, Salem, and the Blue Hills.An arrangement of "solstice stones" on the summit mark annual solstice and equinox events.Pine Hole Bog, a rare quaking bog located on the property is accessed via a boardwalk; The Trustees of Reservations provides an interpretive brochure for the bog at trailhead kiosks.