geology
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Wind-Blasted WaterfallDeep Twilight, Ice BeachMassive SandboxSandstone SandwichDynamic BeachfrontLife and Death in a CalderaDichotomiesRainier ReflectionsNew Mexico Storm LightNorthwestern ReflectionsGrand Prismatic AbstractionMorning at Narada FallsOlympic Mountains in SmokeDawn's Glow: Mount RainierOne Rialto MomentMount St. Helens RetrospectiveSurf Wash: Cold CycleA Day on the Oklahoma PlainsHighland SolaceGoing From Here to ThereYellowstone Morning FogsGetaway to SolaceIceland's Dyrhólaey CoastSeastack Skyline: RialtoOrgan Pipe BasaltVik SurfRoad to HvannadalshnúkurMorning at ÖxarárfossBubbles, Bubbles, Toils and TroublesDyrhólaey: East VistaTwilight Surf and IceBruarfoss BlueThe Stacks of ReynisdrangarThe Inspirational CascadeBlowing off SteamDune LightShades of BlueBlack Sand Dunes at SunsetSpray over Basal BasaltJökulsárlón Sunset ReflectionsCold Wash CycleLeaf SoloLakeshore Vent: Big ConeAlien Underground?Storm and SteamSunlight from BelowVenting Steam in the Morning FogAutumn along Swift CreekGrand Prismatic Wide PerspectiveSteamy LedgesLiquid ChromaticTravertine TakeoverSteam and IceLone Sunflower in the BadlandsSuperior Cliffs at SunsetSteam 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