The Most Beautiful Caves in North America
9 places in 3 countries · updated 13 October 2026
In short: By our ranking, the most beautiful caves in North America are Cave of the Crystals (Mexico), Actun Tunichil Muknal (Belize) and Cave of Swallows (Mexico). The list covers 9 caves in 3 countries. The United States has the most, with 5. Last updated 13 October 2026.
North America's caves are unusually varied because they were made in different ways. In Kentucky and Virginia, slightly acidic groundwater dissolved vast layers of limestone into the longest cave systems on Earth. In the Guadalupe Mountains of New Mexico, sulphuric acid rising from oil deposits carved enormous chambers from below. In the Yucatán and Belize, caves held water and sacred meaning for the Maya, and in northern Mexico hot mineral water deep underground grew crystals larger than any known elsewhere.
The Cave of the Crystals in the Naica mine holds beams of selenite up to about 12 metres long, formed in hot water over hundreds of thousands of years. In Belize, Actun Tunichil Muknal preserves Maya pottery and the calcified skeletons of sacrificial victims inside a river cave. The Cave of Swallows in San Luis Potosà is an open pit hundreds of metres deep, from which swifts and parakeets spiral out in the morning, and the Grutas de Cacahuamilpa in Guerrero are a sequence of vast chambers filled with stalagmites.
In the United States, Mammoth Cave in Kentucky is the longest known cave system in the world, and Luray Caverns in Virginia is known for its mirror-still pools and the Great Stalacpipe Organ, which taps the stalactites to make music. In New Mexico, Carlsbad Cavern's Big Room is one of the largest cave chambers in North America, and nearby Lechuguilla Cave is lined with rare gypsum and aragonite formations. Wind Cave in South Dakota is famous for boxwork, thin blades of calcite in a honeycomb pattern.
In this list
| # | Place | Type | Country | UNESCO |
|---|---|---|---|---|
| 1 | Cave of the Crystals | Cave | Mexico | |
| 2 | Actun Tunichil Muknal | Cave | Belize | |
| 3 | Cave of Swallows | Show cave | Mexico | |
| 4 | Luray Caverns | Cave | United States | |
| 5 | Mammoth Cave | Cave | United States | |
| 6 | Grutas de Cacahuamilpa | Cave | Mexico | |
| 7 | Lechuguilla Cave | Cave | United States | |
| 8 | Carlsbad Cavern | Cave | United States | |
| 9 | Wind Cave | Cave | United States |
01 Cave of the Crystals
Cueva de los cristales
Mexico · 38.7 km from Delicias27.851° N 105.496° W
Alexander Van Driessche · CC BY 3.0 The giants owe their size to heat and patience. A magma body a few kilometres down kept mineral-laden groundwater warm for an immensely long time, and as the temperature slowly fell below about 56 °C, gypsum began to crystallise out of it. Uranium-thorium dating puts the crystals at up to about half a million years old, and laboratory measurements of their growth rate are among the slowest ever recorded for any crystal. The same conditions made the chamber almost lethal: air around 58 °C with near-saturated humidity meant that an unprotected person could last only about ten minutes.
Did you know? At that pace, the largest beams are thought to have needed around a million years to reach their size.
02 Actun Tunichil Muknal
Belize · 18.3 km from Belmopan17.114° N 88.862° W
Jkolecki · CC BY-SA 3.0 The cave lies within the Tapir Mountain Nature Reserve. Its main system runs for about 5 km: a river passage of roughly 3 km ends at a flooded sump, and a series of upper passages continues beyond it through huge fallen boulders and broad chambers, finally opening into a collapsed sinkhole in the jungle. The upper levels are richly hung with formations, and the cave is home to bats, freshwater crabs, crayfish, catfish and large whip spiders.
Did you know? More than 1,400 artefacts have been catalogued in the main chamber alone, ranging from pottery to stone tools and obsidian blades.
03 Cave of Swallows
Sótano de las Golondrinas
Mexico21.600° N 99.099° W
Dave Bunnell · CC BY-SA 4.0 Twice a day the cave puts on a show that predates any tourism: at dawn the birds spiral up and out of the pit to feed, and at dusk they spiral back down and disappear into the walls, thousands of separate flight paths resolving into one visible column of motion. Cavers and BASE jumpers who use the site have agreed among themselves to avoid the rim at those hours and to rig only one fixed rope point year-round, so the colony isn't disturbed by traffic.
Did you know? Each evening, about once a minute, a group of perhaps fifty swifts peels off the circling flock and dives straight down into the shaft.
04 Luray Caverns
United States38.664° N 78.484° W
m01229 from USA · CC BY 2.0 The cave was found on 13 August 1878 by five local men, among them the tinsmith Andrew Campbell and the photographer Benton Stebbins, who had noticed cool air rising from a sinkhole. After about four hours of digging, the two smallest of them squeezed through and lowered themselves on a rope to explore by candlelight. The discoverers tried to buy the land at a court auction while keeping the cave secret, and the Supreme Court of Virginia annulled the sale in 1881. Since 1905 the caverns have been owned by the Luray Caverns Corporation, founded by Colonel Theodore Clay Northcott, whose descendants, the Graves family, still run them.
Did you know? Northcott's sanatorium drew cave air up a shaft 1.5 metres wide with a large electric fan, replacing all the air in the house roughly every four minutes.
05 Mammoth Cave
United States · 37.3 km from Bowling Green37.183° N 86.100° W
Daniel Schwen · CC BY-SA 4.0 That same year, the cave's owner, physician John Croghan, tried something else with it: he moved sixteen tuberculosis patients into stone huts built inside the cave, believing the constant cool air and mineral vapors would cure them. It didn't. Five patients died underground, and the rest died shortly after being brought back to the surface; the experiment was abandoned within ten months. The stone hut foundations are still there today — one of the stranger structures inside any show cave in the world.
Did you know? Several fossil shark species, including Glikmanius careforum and Troglocladodus trimblei, are known only from the roughly 330-million-year-old limestone of Mammoth Cave.
06 Grutas de Cacahuamilpa
Parque nacional Grutas de Cacahuamilpa
Mexico · 16 km from Taxco18.670° N 99.510° W
A270503 · CC0 The caves lie beneath the Cerro de la Corona ridge in northern Guerrero and extend into the neighbouring state of Morelos. Around ninety chambers have been identified, linked by a central gallery, of which about twenty are fully explored. Pottery fragments show the caves were used before the Spanish conquest, and indigenous peoples of the area are said to have held ceremonies in them. The name Cacahuamilpa comes from a place near the entrance and is usually translated as "peanut field". By tradition, the local population kept the caves hidden from the Spaniards; their "discovery" is credited to Manuel Sainz de la Peña Miranda, who sheltered here in 1834.
Did you know? One dry chamber, called the Auditorium, has a flat floor fitted with seats and has hosted concerts, including one by the Acapulco Philharmonic Orchestra in 2009.
07 Lechuguilla Cave
United States · 36.3 km from Carlsbad32.191° N 104.503° W
Dave Bunnell / Under Earth Images · CC BY-SA 2.5 They were right. In 1986, a team broke through that rubble into a system that just kept going — more than 240 kilometers surveyed since, making Lechuguilla one of the ten longest caves on Earth and, at nearly 490 meters deep, one of the deepest in the United States. What they found inside included gypsum "chandeliers" up to six meters long and hair-thin gypsum needles, formations found in almost no other cave anywhere.
Did you know? Unlike most limestone caves, Lechuguilla was dissolved from the bottom up by sulfuric acid, formed from hydrogen sulfide that seeped upward from nearby oil deposits.
08 Carlsbad Cavern
United States · 33.6 km from Carlsbad32.177° N 104.441° W
Image by Christopher_OToole_Images from Pixabay The cave has an unusual origin. Around 250 million years ago this area lay under a shallow sea, and a great reef grew along its edge; that reef, now limestone, forms the Guadalupe Mountains. Most limestone caves are dissolved slowly by rainwater, but Carlsbad Cavern was carved from below: hydrogen sulfide rising from petroleum deposits met oxygen-bearing groundwater and formed sulfuric acid, which ate out the huge chambers. Only later did dripping water begin to decorate them with the formations visitors see today.
Did you know? The Bottomless Pit earned its name because stones dropped into it made no sound; it is about 43 metres deep, and its soft dirt floor muffled every impact.
09 Wind Cave
United States43.558° N 103.480° W
National Park Service of the United States of America · Public domain What sets the cave apart is its walls. Thin blades of calcite criss-cross the ceilings and passages in a honeycomb pattern known as boxwork, which was first described here; the great majority of the world's known boxwork is found in this one cave. The fins began as cracks filled with calcite in gypsum-bearing limestone laid down in a Mississippian sea; as the softer rock around them weathered away, the calcite blades were left standing out by up to a metre. Deeper levels add frostwork, cave popcorn and moonmilk, and the first helictite bushes ever recorded were found here as well.
Did you know? Nearby Jewel Cave is even longer, so Wind Cave is only the second longest cave in its own county; no link between the two has ever been found.
How this list is ranked
Places are chosen for how they look, not for how famous they are: each one has its own description and a photograph credited to its author. The order is a single world ranking that weighs the beauty of the place in curated photography together with how widely it is documented — the number of language editions of its encyclopedia article and how often that article is read in a year. The list is rebuilt as places are added, so the order and the counts on this page are always current.
Questions people ask
- What are the most beautiful caves in North America?
- On our list, Cave of the Crystals (Mexico) ranks first, followed by Actun Tunichil Muknal (Belize) and Cave of Swallows (Mexico).
- Which country has the most caves in North America?
- In our collection, the most come from the United States (5), Mexico (3) and Belize (1).
- What is the longest cave in the world?
- Mammoth Cave in Kentucky is the longest known cave system in the world, with more than 680 kilometres of surveyed passages, and exploration continues to extend it.
- How big are the crystals in the Cave of the Crystals?
- The largest selenite crystals in the Naica cave are about 12 metres long and weigh tens of tonnes. They grew in mineral-rich water kept at a stable high temperature until mining pumped the cave dry.
- What is boxwork?
- Boxwork is a cave formation made of thin blades of calcite projecting from the walls and ceiling in a honeycomb pattern, left behind when the surrounding rock dissolved. Wind Cave in South Dakota contains most of the world's known boxwork.
- How many caves are on this list in North America?
- The list covers 9 caves in 3 countries. The United States has the most, with 5.