THIS TRIP IS FULL.  WAITLIST AVAILABLE.  Explore in carpools this now-closed landfill adjacent to the Blue Mash Nature Trail. Mostly open terrain on a gravel road, including two pond views. In addition to sparrows, raptors, and waterfowl, shorebirds are possible if there are mudflats at the big pond. The leader will have a scope for distant birds. We will meet at 8 a.m. at 6001 Rt. 108, Laytonsville, Md. Limit: 16. LEADER: Mark England at englandmark@comcast.net. NOTE: The County requires all participants to provide their names and phone numbers when they register for this trip.