720 Items Tagged

Geological Oddities

Kozłów, Poland

Pustynia Kozłowska

How did this desert wind up in the middle of a Polish forest?

Phoenix, Arizona

Hole-in-the-Rock

Millions of years of erosion created the feature for which this rock formation is aptly named.

Hérémence, Switzerland

Pyramides d'Euseigne

These spindly, stone-capped formations are the product of glacial deposits and thousands of years of erosion.

Beneath downtown Minneapolis, Schieks Cave has surprisingly warm groundwater, evidence of a subterranean heat island.

The Strange Heat Island Lurking Beneath Minneapolis

An urban explorer ventured deep below downtown in search of Schieks Cave. What he found changed science.

Sarah Scoles August 13, 2024

Moapa Valley, Nevada

Buffington Pockets

The rocks exposed at Valley of Fire State Park also occur in a much less known but equally spectacular area a few miles to the southwest.

Miners Rock Shop

A family-owned store specializing in minerals, geodes, gemstones, and more.

Grampian, Pennsylvania

Bilger's Rocks

Rocky outcrops containing overhangs, caves, fissures, clefts, and alcoves that invite exploration and scrambling.

Durango, Colorado

Pinkerton Hot Springs

A multicolored mineral mound dribbles piping hot spring water right off the side of a highway.

Xerri’s Grotto

A small cave network was discovered under a home in Xagħra, in 1924 when the owner was digging a well.

Ninu’s Cave

In 1888, a resident of Xagħra, Malta, discovered a small underground chamber filled with stalactites and stalagmites when digging a well.

21 Caves That Offer Otherworldly Experiences

From subterranean haunts filled with glowing larvae to the oldest cave system in the world.

Jonathan Carey May 31, 2024

Deakin, Australia

Deakin Anticline

This fascinating and unusual geological formation dominates a suburb of Canberra.

Jons Kapel (Jon's Chapel)

Local legend says a monk brought Christianity to Bornholm through his sermons in a cave inside this free-standing rock.

Mexican Hat, Utah

Mexican Hat

This balancing rock is one of Utah's most unusual geological formations.

Big Bend National Park, Texas

Balanced Rock

This gravity-defying rock formation is one of Big Bend’s natural wonders.

Duvauchelle, New Zealand

Ōnawe Peninsula

A peninsula on a peninsula that becomes an island at high tide.

Ishpeming, Michigan

Jasper Knob

A small mountain made entirely of banded iron stone overlooking downtown Ishpeming.

How This Cave Formed Upside Down | Untold Earth