Silhouetted pines rise before the orange bacterial mats bordering Grand Prismatic Spring's blue coreA visitor pauses on the boardwalk overlooking colorful steaming runoff at Grand Prismatic SpringA boardwalk stretches across the pale, mineral-crusted flats of Yellowstone's Midway Geyser BasinA rushing river winds through a steep, forested canyon lined with dead standing timberA hiker waits beside a pedestrian crossing sign on an empty mountain road flanked by rock and forestTwo wind-bent dead trees frame a distant band of orange thermal ground and pine forestA hiker in hi-vis pauses on an empty mountain road beside a pedestrian crossing signBleached lodgepole pine skeletons stand in mineral-crusted ground near a thermal basinBare, sun-bleached tree trunks rise from a stark white thermal flat under a big skyA single dead tree stands stark against pale thermal ground and distant forested hillsCharred, bleached tree trunks cast long shadows across a barren geothermal basinAn arched dead tree leans over amber thermal runoff at the edge of a forestA boardwalk skirts an orange and white mineral terrace beside a tree-lined thermal lakeA small geyser vents steam and mist from a turquoise pool on a wide thermal plainA turquoise thermal pool sits nestled among pines and driftwood on a Yellowstone hillsideTwo visitors walk a boardwalk curving through a vast, colorfully mineral-streaked geyser basinA geyser erupts in a plume of spray as onlookers watch from a boardwalk railingA fallen, weathered tree lies across a barren thermal flat with a turquoise pool beyondRust-orange thermophile mats meet dark water at the edge of a hot spring, with a fallen logSteaming orange and rust-colored bacterial mats rimmed with white silica along a hot spring's grassy bankVivid orange thermophile mat meeting turquoise spring water along a rocky, wildflower-dotted bankPale turquoise thermal water fading into a mineral-crusted shoreline, subtle steam drifting across the surfaceA weathered, bleached tree stump stranded on a barren mineral flat streaked with rust-colored runoffBare, ghostly lodgepole pines standing in a chalky white thermal basin against a distant forest treelineSkeletal dead trees rising from a bleached geyser basin flat, hills and pine forest on the horizonTwo bark-stripped trees standing starkly on cracked white ground in a Yellowstone thermal basinA stand of bare, silvered dead trees against blue sky, killed by mineral-rich ground in a geyser basinBright orange thermal runoff cascading over a mineral terrace, steam rising toward distant pine-covered hillsA lone hiker walks a boardwalk beside steaming turquoise thermal water, forest rising behindA walker on the boardwalk above Grand Prismatic Spring's cracked mineral flats, distant hills under a wide skyAbstract close-up of cracked mineral crust patterns bordering a dark thermal runoff channelGrand Prismatic Spring's rainbow rings of orange and turquoise, steam drifting toward a dense conifer forestSteam drifts over teal water and orange bacterial mats along Grand Prismatic Spring's rippled shorelineForested ridge frames the vivid orange and teal banding of Grand Prismatic Spring's mineral terracesSteaming turquoise water meets a mosaic of cracked orange mineral terraces at Grand Prismatic SpringSteam rises off Grand Prismatic Spring's blue-green pool, backed by dense pine forestVivid orange thermophile bacteria bloom across cracked mineral flats near Grand Prismatic SpringSinuous channel of dark runoff cuts through the orange and white terraces of a Yellowstone hot springA crescent of deep red algae mat curves against pale mineral crust at Grand Prismatic SpringA small bird walks alone across the amber bacterial mat bordering a Yellowstone thermal poolA bleached log rests across the burnt-orange bacterial terraces of a Yellowstone geothermal basinLayered bands of orange, brown, and turquoise mark the runoff channels of Grand Prismatic SpringClose-up of cracked earth forming a branching network of dried mineral deposits in a geyser basinThree visitors walk together along a boardwalk winding through Yellowstone's geothermal basinThe vivid turquoise eye of a Yellowstone hot spring surrounded by pale, cracked mineral crustGrand Prismatic Spring's rainbow rings of orange and turquoise seen from the forested overlook trailPine trees frame the sweeping turquoise and orange expanse of Grand Prismatic Spring from aboveElevated view of Grand Prismatic Spring's full rainbow palette with a boardwalk crossing its edgeSteaming rainbow-colored runoff channels ring the turquoise pool of Grand Prismatic SpringA blackened lodgepole pine spike stands alone amid pale mineral terraces near a thermal basinVisitors on a bench watch steam rise from Old Faithful's cone before an eruptionOld Faithful geyser erupts skyward in a towering plume of white spray against blue sky