The Lost Pond Conservation Area is located in the extreme southwest corner of Brookline. It is bounded by the town's Transfer Station area, the Metropolitan District Commission (MDC) Lost Pond reservation, and the Kennard Park and Conservation Area in Newton.This 30-acre tract of natural, undeveloped land adjoins the Kennard Park and Conservation Areas in Newton and the state's 30-acre Lost Pond Reservation. Together, these properties contain over 100 acres of open woodland, rocky outcrops, marsh, bog and stream. A network of trails interconnects these conservation properties.