Natural Wonders in the United States

On a clear afternoon, you can see mountain peaks more than 40 miles away from this clearing in the Pisgah National Forest.

Colorado’s second largest natural lake was created by a landslide.

A large lava tube that can be walked through with no special equipment.

A large wave-cut shelter, a major archeological site, overlooks the dry basin of Winnemucca Lake.

It’s hard to believe this hostile landscape was once a health resort.

A short tunnel built straight through a magmatic dike.

Under the right conditions, rocks will move across this dry lakebed, leaving trails behind them.

One of the oldest show caves in Arkansas.

Louisiana's tallest waterfall is only a short hike away from the middle of nowhere.

Red rock "fangs" jut out of the desert near the Extraterrestrial Highway.

One of the "twins" in these falls on the Snake River was sacrificed for hydropower generation in the 1930s.

This magnificent natural sandstone bridge is one of the largest in the world and is an iconic symbol for Lake Powell.

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

Along the Outback Scenic Byway, adjacent to hot springs, this human-made geothermal feature takes unexplained breaks.

A 30-mile-long glacially-carved canyon leads to a massive pair of glaciers.

The limestone composition of this spectacular arch makes it unique to the region.