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Caves, Caverns, and Underground Attractions in Pennsylvania

Get the lowdown on what’s underground.
Manhattan Well
murder

The Manhattan Well: How Aaron Burr and Alexander Hamilton United to Solve a Murder Mystery

In 1800, Elma Sands was found murdered at the bottom of the Manhattan Well. What followed was America’s first recorded trial.
The Podcast Team June 27, 2025
Beneath downtown Minneapolis, Schieks Cave has surprisingly warm groundwater, evidence of a subterranean heat island.
subterranean

Schieks Cave Below Minneapolis Contains a Lake of Warm Sewage

An urban explorer ventured deep below the bustling streets of downtown Minneapolis. He discovered more than he bargained for.
The Podcast Team June 26, 2025
The Big Well
subterranean

This Kansas Town Advertised the World’s Largest Well. It Wasn’t.

From its hand-dug well to its fully sustainable power grid, Greensburg’s defining characteristic has been its own constant reinvention.
The Podcast Team June 12, 2025
In California, every season is adventure season.
Itinerary

Explore California on Foot: Nature’s Year-Round Playground

Walks, hikes, and strolls that show off the state’s splendor.
Madrid, Spain

Iguazú Digital Waterfall

This 40-meter waterfall of light graces one of the most iconic stations in the Madrid metro network.
Lauterbrunnen, Switzerland

Trümmelbach Falls

Visit Europe's largest subterranean waterfall, carved by water from the glaciers of the towering peaks surrounding the valley.
List

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
Cueva de la Yedra
Villarrubia de Santiago, Spain

Cueva de la Yedra

This cave in the heart of La Mancha is full of esoteric secrets.
Ogbunike, Nigeria

Ogbunike Caves

Legend has it these caves were created by a deity called Ogba, who is said to live inside the winding subterranean caverns.
subterranean

Podcast: Buffalo Bayou Park Cistern

This 90-year-old underground reservoir once held 15 million gallons of drinking water for the people of Houston.
The Podcast Team January 24, 2024
A parasitic fungus emerges from the body of a fly in Peru.
subterranean

5 Creepy Tales of Real-World Zombies

And 10 places to wait out a (fictional) undead apocalypse.
April White October 20, 2023
Burnet, Texas

Longhorn Cavern

An immense cave that has served as an outlaw's treasure trove, an underground dance hall, a nuclear fallout shelter, and much more.
Scientists explore the lava tube they have dubbed the "Red Cave" for its rusty hues.
subterranean

Taking the First Steps Into a Newly Formed Volcanic Underworld

More than a year after a devastating eruption in the Canary Islands, a team is exploring a braided network of still-hot lava tubes.
Maya Wei-Haas July 19, 2023
The Cincinnati home of Quaker and abolitionist Levi Coffin, seen here around 1905, was a stop on the Underground Railroad.
subterranean

The Underground Railroad Was the Ultimate Conspiracy to Southern Enslavers

And justified the most extreme responses.
Colin Dickey July 11, 2023
Itinerary

6 Ways To See Texas Below the Surface

How to explore the state’s caves, caverns, and fascinating geology.
Jewel Cave
Deepdene, Australia

Jewel Cave

This ancient limestone cave system contains many impressive geological features.
There's still much scholars don't know about Villa. Even the exact year of her death remains a mystery.
subterranean

The Female Architect Behind Buenos Aires's Underground Necropolis

Ítala Fulvia Villa oversaw the building of the colossal Sixth Pantheon—but history nearly erased her contributions.
Daniel Maurer March 8, 2023