A volcanic landmark located on an Ice age lake bed.

This large maar crater in Oregon is the bigger brother to Hole in the Ground.

Massive crater in central Oregon.

The longest continuous lava tube in Oregon.

The world's last remaining store of its kind.

A rugged lava field dotted with molds of the ancient pines that were growing when the volcano erupted.

The smallest country in the world.

A sprawling cave network created by a lone lava tube.

There's something big lurking beneath the surface of this tiny Oregon park.

On the Oregon coast there is a natural hole that seems to be draining the sea.

As a show of peace, a Japanese naval pilot gifted his 400-year-old Samurai sword to the Oregon town he bombed.

A lighthouse built to save lives that took quite a few with its treacherous location.

Canyon walls shrouded in ferns.

This Nevada lake holds its titular natural pyramid and, if the legends are true, a number of dangerous spirits.

This dry lake bed contains the oldest known petroglyphs in North America.

Bits and pieces from the ill-fated Donner Party's winter cabins.

One woman's Viking Castle on Lake Tahoe.

Eastern zen meets Western grit in these four little trees growing out of a rock on Lake Tahoe’s Nevada shore.

This historic estate on the east shore of Lake Tahoe was home to an eccentric millionaire (and his pet elephant, Mingo).