ANIAKCHAK NATIONAL MONUMENT
More people explore space each year than visit Aniakchak National Monument in Alaska, a collapsed volcanic crater that contains some of the rawest wilderness in North America. Fresh off the angry Bering Sea, waterfalls of billowing cloud spill over Aniakchak’s steep crater rim during wet weather, adding a ghostly sheen to the ‘lost world’ of giant bears and barren tundra below. If you’re up for adventure, you can backpack into the crater using sinuous animal trails, before white-water rafting out along the foamy Aniakchak River to the sea. Hikers will need foldable kayaks, lightweight camping equipment and lots of courage. Fly into the tiny settlement of Port Heiden and hike from there. See nps.gov/ania.