geology
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Steam Venting in Mount St. HelensSun-Splashed Bentonite BedsSuperior Shore at Knife RiverColor at Kebler PassWavy Colored Slopes, Badlands National ParkRoosevelt's RiverFall Splendor in the San JuansAutumn LightAlong an Austrian RiverPlunge into the PoolOcean SkylineLeaning Chalk Tower of KansasOn the Keweenaw ShoreA "Ghost Riders" SkySea Stack in Sun and FogRoaring Gorge in the RainStormy Sky over Volcanic PlainsWashington Coast ReflectionsNahunta Falls, Mt. Rainier National ParkLight and Shadow, Oglala National GrasslandWintertime at Mono LakeMountain Wetlands in SummerSpray Falls, Lake SuperiorIsland in the FogSunset on Rialto BeachPinatubo Twilight over South FloridaReflected Cliffs at Pictured RocksBig Sky over Mt. RainierRaindrops on Beach PebblesWaterfalls in the Oklahoma OzarksMono TonesTre Cime di Lavaredo, in the Clouds