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 Tyringham 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 foot gear (feet may get wet in the floodplain) and bring a lunch. The walk on Sunday, September 27, will begin at 11 a.m., will be led by Ted Elliman, is limited to 15 participants, and is co-sponsored by The Trustees of Reservations. $40 fee for members of NEWFS and The Trustees of Reservations, $45 for non-members. To register, log on to www.newfs.org, or call 508-877-7630.