A mysterious light floating in the trees of Arkansas may be a piezoelectric effect.

Two gushing waterfalls of hot spring water within a block of each other.

Moonbows over Kentucky.

A table rock formation that has been intriguing West Virginians for years.

What is it about mushrooms that makes people wish they lived inside of them?

The largest earthwork effigy in the world.

Rare recess caves fill this unbelievably beautiful Ohio park.

The entrance to this sinisterly named tunnel hides behind a Tim Hortons.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

Hidden amid a collection of trails is the site of a tragic crash.

An idyllic mineral hot springs facility with a more-than checkered past.

This granite rock face is named for the magnificent reflection that occurs when the sun hits it just right.

A 315-foot spire jutting out from the Blue Ridge Mountains makes for breathtaking views.

The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.

Carved faces add a touch of magic to this island's impressive oak trees.

This home is decked out like a psychedelic explosion of colors and bowling balls.

This structure among the trees was the result of divine inspiration.

Enormous lake at the bottom of a unique cave system.

Visit this playground of waterfalls, caves and sinkholes.

This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.

The perfectly named cave drop is the deepest in the continental United States, almost matching the height of Seattle’s Space Needle.

Constant erosion has created a surreal landscape of bleached and preserved fallen trees.

A secret, rocky playground hidden amongst the plain white beaches of the Florida coast.