Richard Hamilton, geologist and teacher, will lead an interpretive hike to the section of Field Farm known as the Caves lot at 1 p.m. Saturday, Sept. 28.
Hamilton will discuss the geologic history leading to the formation of the caves. The walk will begin at the Field Farm trail parking area and is free and open to the public.
The event is sponsored by the Trustees of Reservations. Field Farm is located at 554 Sloan Road, South Williamstown.