Spilling Thought: Yellows and purples hint at the fiery past of Skookum Volcano in this photo, taken just moments before a storm passed through Wrangell-St. Elias National Park & Preserve in #Alaska. From walking in the shadow of ancient volcanoes to navigating some of the biggest ice fields in North America, there’s so much to explore across this vast, rugged landscape. #wrangellstelias -- the largest #nationalpark in the U.S. -- boasts more than 13 million acres of scenic views and outdoor adventures for every season. Photo by National Park Service. by usinterior