Living within the caldera of an active supervolcano, Yellowstone National Park protects over 2 million acres of the world's most spectacular phenomena. Nearly 400 species of fauna rely on the park's diverse ecosystem. Over one million acres of forest fold between more than 10,000 geothermal features, sprawling meadows, and 3.3 million acre-feet of running water. Yellowstone straddles the Great Continental Divide; while shifting and solidifying over millennia, the Divide created the staggering cliffs and summits we see in the park today.
The island of Hawai'i, or the Big Island, is a scientific marvel; it contains eleven out of thirteen microclimates on earth, all within a landmass which you can drive from coast-to-coast in only 3 hours. Though it is not without quintessential Hawaiian forests and beaches, hardened lava sheathes most of the island. It is difficult to forget that you are travelling above five volcanoes as you explore the terrain. The tallest volcano of Hawai'i is Mauna Kea. Standing almost 14,000 feet high, and in the most remote place on earth, the volcano is a premier location for space observation. It hosts over a dozen observatories managed by organizations like NASA, and even Subaru.