Derek Brawdy Grand Prismatic Milky Way February 7, 2018 Reflection of the Milky Way over the Grand Prismatic Pool in Yellowstone National Park. Canon 5D Mark III 24mm · f/2.8 · 20s · ISO 1600Landscape Grand Prismatic Pool YNP Yellowstone National Park nps national park wyoming Astrophotography Astro milky way reflections Log in or register to post comments