Field index

Natural Oddities

Browse documented natural oddities from across America.

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75 documented oddities Highest curiosity first

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Natural Oddities

Killpecker Sand Dunes

Rock Springs, Wyoming

A vast Wyoming dune field can hum and boom when millions of polished sand grains slide together.

Natural Oddities

Desert of Maine

Freeport, Maine

A failed farm in famously green Maine exposed a huge deposit of glacial sand, leaving dunes where fields, sheep, and crops once occupied the landscape.

Natural Oddities

Earthquake Lake

Cameron, Montana

A 1959 landslide dammed the Madison River and made a new lake overnight.

Natural Oddities

Fantastic Caverns

Springfield, Missouri

Visitors ride through a cave on a Jeep-drawn tram beneath towering columns and limestone formations.

Natural Oddities

Red Bluff

Foxworth, Mississippi

Mississippi’s Little Grand Canyon reveals vivid cliffs carved by constant erosion.

Curious Landmarks

Devils Hole

Amargosa Valley, Nevada

A hot desert cave shelters a fish found nowhere else and even registers distant earthquakes.

Natural Oddities

Blue Hole of Santa Rosa

Santa Rosa, New Mexico

A vivid blue, spring-fed sinkhole opens beside old Route 66.

Natural Oddities

Big Spring

Van Buren, Missouri

An immense blue-green spring pours from an Ozark hillside into the Current River.

Natural Oddities

Old Sow Whirlpool

Eastport, Maine

Powerful tides off Eastport can twist into a whirlpool more than 250 feet across, complete with smaller surrounding vortices known appropriately as piglets.