Waterfalls

A rainbow forms over the base of the Skógafoss waterfall at the start of the Fimmvörðuháls Trail in southern Iceland.

Geometric basalt columns flank the Svartifoss waterfall in the Skaftafell Nature Preserve of Iceland's Vatnajökull National Park.

Dense, bright moss grows around the thundering lower fall of Falls Creek Falls, filling a deep blue pool in the Gifford Pinchot National Forest.

A mossy, wet path reveals itself behind the Seljalandsfoss waterfall in southern Iceland.

Behind the Goðafoss waterfall in northern Iceland is rocky and mossy terrain carved by the plunging falls over centuries.

The teal blue water of the Skógá River contrasts against the rusty volcanic rock mountains surrounding this series of cascades on the Fimmvörðuháls Trail in Iceland.

Double-deckered waterfalls fill turquoise blue pools along the Fimmvörðuháls Trail in Iceland.

Flanked by rocky, mossy walls, these blue-green falls lead the way to Avalanche Lake in Glacier National Park.

This double decker waterfall invites vibrant mosses to grow on the Falls Creek trail in Gifford Pinchot National Forest.

Looking back beyond the Fostorfufoss waterfall stretches a grassy landscape littered with sheep in southern Iceland.

The impressive Seljalandsfoss waterfall surges nearly 200 feet to the ground in southern Iceland.

Spanning nearly 100 feet wide, the plunging Goðafoss waterfall sends clouds of mist into the air in Northern Iceland.

Surrounded by lush vegetation, cascades of Kings Creek feed into Kings Creek Falls in Lassen Volcanic National Park.

Water descends from Latourell Falls in Columbia River Gorge in Oregon.

The Öxarárfoss waterfall spills over basalt rock formations in Þingvellir National Park in Iceland.

The lower falls of the double-decker Falls Creek Falls cascades into a blue pool surrounded by bright green mosses.

A modest stream cascades off a mossy, carved rock ledge on the Fimmvörðuháls Trail in Iceland.

The Skálabrekkufoss waterfall plunges to a deep pool below nestled within shelf-like rocks on the Fimmvörðuháls Trail in Iceland.

A double rainbow adorns the Skógafoss waterfall in Iceland as shore birds are seen soaring from above.

A lone crow soars above the lower falls of the impressive Grand Canyon of the Yellowstone in Yellowstone National Park.

The Steinbogafoss waterfall enriches a hilly, vegetated landscape in southern Iceland.