Dave Linthicum has been losing orienteering events and doing maps for the sport since starting in 1974 (as a Scout.) He’s GPS’d and used maps for trekking up to 20,000 ft. all over Tajikistan, Nepal, Pakistan, the Andes, Tanzania, Ladakh, Tasmania, Jordan, and the Alps by land, and British Columbia, Alaska, New Zealand, Thailand, Baja, Maine, and Elba by sea (kayak), all with Peggy Brosnan. They live 19 miles from the US Capitol and a mile from their nearest neighbor on the longest river entirely in Maryland. YouTube
Dave’s new water trail map of that river is a best-seller. Dave was recently the primary witness for the plaintiff in the precedent-setting environmental victory in Patuxent Riverkeeper vs. Md. Dept. of the Environment before the Maryland Court of Appeals, furthering citizen standing (Court Upholds Citizens Rights in Fight Over Woodmore Towne Center). In real life at the Office of the Geographer of the US State Dept., he analyzes, edits, and draws most of the non-European international boundaries that you see on Google Earth/Maps and for all federal military and civilian use.