Wrangell-St. Elias National Park: Complete UNESCO Guide Wrangell-St. Elias National Park forms the American cornerstone of the world’s largest internationally protected mountain ecosystem, designated as a UNESCO World Heritage Site in 1979 as part of the Kluane / Wrangell-St. Elias / Glacier Bay / Tatshenshini-Alsek transnational property. At 13.2 million […]