north, america, u.s.a., usa, united, states, of, america, american, north american, north america, u.s., US, united states, united states of america, americas, ron, niebrugge, ron niebrugge, yellowstone, national, park, yellowstone national park, YNP, Yellowstone NP, N.P., NP, wyoming, WY, W.Y., mammoth terraces, mammoth, terraces, sunrise, early, morning, light, travertine, steps, geothermal, thermal, close, up, close up, detail, grand, magnificent, awe, awesome, amazing, wonder, landcape, landscapes, marvel, marvelous, formations, columns, stunning, calm, calming, peaceful, serene, serenity, tranquil, tranquility, dawn, dawning, new, day, steam, reflective, thoughtful, inspire, inspirational, inspiration, inspiring, wild, wilderness, nature, natural, geology, winter, landscape, landscapes, snow, trees, forest, fog, nature, natural, wild, wilderness, tranquil, tranquility, peaceful, serene, serenity, calm, calming, reflective, thoughtful, travel, tourism, vacation