The secluded Tyringham Valley is one of the most scenic areas in the southern Berkshires.  This field trip will take us through a variety of natural and pastoral landscapes, climaxing with a panoramic view of the surrounding countryside from the top of the Tryingham Cobble, a natural area owned by the Trustees of Reservations.  We will look closely at the flora of the Hop Brook floodplain, a calcareous wetland community with a remarkable variety of grasses, sedges, and wildflowers, including several rare species.  As we hike towards Tyringham Cobble, we will explore successional old fields and mixed hardwoods-hemlock slopes.  Songbirds and butterflies, as well as wildflowers, grace the meadows of this special area.  The hike is about 4 miles long and moderately strenuous.  Wear suitable footgear (feet may get wet in the floodplain) and bring a lunch.