 He donated $4.25 million to The Trust for Public Land in 2013 for the purchase of oil and gas leases in Wyoming to prevent development in the Hoback Basin.In 2016, Wyss made another donation to the Trust for Public Land that resulted in the expansion of Saguaro National Park in Arizona by 300 acres, including a mile and a half of Rincon Creek.Wyss is involved with The Wilderness Society, Rails-to-Trails, and serves on the boards of the Southern Utah Wilderness Alliance, Center for American Progress, and the Grand Canyon Trust.