Explore in carpools this now-closed landfill adjacent to the Blue Mash Nature Trail. Mostly open terrain on both paved and gravel roads, including two pond views. Possible sparrows, raptors, and waterfowl. Shorebirds are possible if there are mudflats at the big pond. Leader will have scope for distant birds. Meet at 8 a.m. at 6001 Rt. 108, Laytonsville, Md. Limit: 17. Note: Reservations with a phone number required at least a week ahead of the trip for names to be submitted to the County. LEADER: Mark England at englandmark@comcast.net.