Nat Scrimshaw– ‘Chair at WTN Americas’ Did you know Nat Scrimshaw has been an active trail steward for over 40 years in both New England and Central America. Nat is the chair of WTN Americas and the Trails & Sustainability International Task Team. Nat mixes his work in Costa Rica with efforts in the White Mountains of New Hampshire, including adopting the Franconia Ridge Trail, part of the 3,500..