Backstone Bank and Baal Hill Woods one side valley, there is a small population of small-leaved lime, "Tilia cordata", which occurs here close to its northern limit and at an unusually high altitude. On base-rich soils, the woodland typically consists of ash, "Fraxinus excelsior", and wych elm, "Ulmus glabra", over an understorey of hazel, "Corylus avellana", and bird cherry, "Prunus padus", and a rich ground flora that includes lady-fern, "Athyrium filix-femina", male fern, "Dryopteris filix-mas", and hard shield-fern, "Polystichum aculeatum". On more acid soils, sessile oak, "Quercus petraea", and birch, "Betula sp.", are dominant. The under-storey, of hazel, holly, "Ilex aquifolium", rowan, "Sorbus aucuparia", and hawthorn,
Berry Mountain Pond, , presumed the highest natural pond in the state of Massachusetts, is located on the ridge between Berry Mountain and Berry Hill to the north. The west side and summits of Berry Mountain are located within Hancock, Massachusetts; the east slopes are located within Pittsfield. The ridgeline continues south from Berry Mountain as Pine Mountain and Tower Mountain; it continues north as Berry Hill. Berry Mountain is bordered by West Hill to the west across the Wyomanock Creek valley. The west side of the mountain drains into Berry Pond Creek, then Wyomanock Creek, thence into Kinderhook Creek, the Hudson