Monson, Maine
Gulf Hagas
The “Grand Canyon of Maine” is a three-mile gorge full of striking geological features.
Places I want to go
Places on this traveler's wishlist.
Monson, Maine
The “Grand Canyon of Maine” is a three-mile gorge full of striking geological features.
Mammoth Spring, Arkansas
The seventh largest spring in the world.
Isle of Eigg, Scotland
This cramped crevasse saw the entire population of its island suffocated inside its depths.
Lendalfoot, Scotland
Legend says this cave housed a 16th-century cannibal and his family of 48.
Lendalfoot, Scotland
Near this coastal cave stands a small memorial to the hermit who made it his home for three decades.
Krakow, Poland
This Polish cave has housed a dragon, a brothel, and an enduring legend.
Sintra, Portugal
This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.
Rožanstvo, Serbia
Through the colossal entrance to this cave you'll find limestone tubs and an underground waterfall.
Florián, Colombia
A three-tiered waterfall plummets from a mountain cave with amazing views over the countryside.
Sam Roi Yot, Thailand
At the right time of day, sunlight floods through the roof of this cave and illuminates the small pavilion hidden within.
Pelham, Tennessee
An ancient cave system in Tennessee’s Appalachian foothills converted to a 1,200-person music venue.
Coron, Philippines
This curious fresh and salt water lake holds a secret that draws in deep divers from around the world.
Matmatat-Al-Qadimal, Tunisia
Made famous by 'Star Wars,' these troglodyte homes face an uncertain future.
Moab, Utah
Few things look more out of place than the electric blue ponds in the reddish-brown desert of Utah.
Moab, Utah
A crack flared at the base provides a pathway completely through a sandstone ridge near Moab.
Childersburg, Alabama
Since it formed millions of years ago, this cave system has been a sacred burial ground, a Prohibition-era speakeasy, and the center of an amusement park.
Isle of Skye, Scotland
Though difficult to access, this stunning cave has a place in Scotland's poetic history.
Borrowdale, England
It's believed a local adventurer spent 50 years living inside this cave.
Ashland, Massachusetts
This cave was once thought to be a hiding place for the devil.
Etsaut, France
This narrow path was cut right into a French mountainside to feed the country's early naval expansion.
Taza Province, Morocco
The true depths of these stunning Moroccan caves are unknown.
Idanha-a-Nova, Portugal
Houses are tucked between, on, and underneath giant boulders.
Castalla, Spain
This site is both a remarkable reminder of the town's mining history and a fantastic government blooper.
Isle La Motte, Vermont
Journey through various trails to discover a land before time along the Chazy Fossil Reef.