15 Amazing Caves in Alaska (From Popular Spots to Hidden Treasures)

Written by Christina Eck
Published: September 27, 2023
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Alaska has excellent fishing and amazing views of the Northern Lights but also has just as exceptional caves. The state is rich in minerals, limestone, and rainwater, which causes this extraordinary process that forms unique cave types. Caves outside of Alaska might seem dark and dreary, but inside this state, caves look much different.

Many caves are formed from glaciers melting and refreezing during the summer and winter. If you’ve ever wanted to see such amazing feats, then you’re in for a treat. You can find guided tours of these caves with amazing views and fun surrounding activities.

So, let’s get into discovering these 15 amazing caves in Alaska!

#1: Mendenhall Ice Caves

Juneau, Alaska - US State, Mendenhall Glacier, Glacier, Lake

The Mendenhall Glacier has multiple caves that visitors can explore. However, they are best viewed during the summer months in good weather.


Mendenhall Glacier spans 13.6 miles and is inside Mendenhall Valley. It’s home to some of the most stunning ice caves you’ll ever see. Initially, the glaciers were named the Tlinkit Sitaantaagu, which means Glacier Behind the Town, or Aak’wtaaksit, Glacier Behind the Little Lake.

The glacier is home to some of Alaska’s most amazing yet treacherous caves. If you plan to visit, you will need to book a tour, as to get to the Mendenhall Ice Caves, you will need to trek across Mendenhall Glacier. This hike is slippery and extremely dangerous, especially in certain weather conditions.

Inside the cave, there are beautiful blue ice formations that are breathtaking. Each ice formation has this cloudy look, reflecting any light off the walls. While stunning, the ice inside the caves constantly shifts, which can be dangerous but worth it if you are with a guide.

You can get to the caves in two ways. A 20-minute drive from Jeanue, AK’s capitol, or hiking through Tongass National Forest for eight miles. Both are excellent activities, as you get to explore the surrounding beauty of Alaska and its glaciers.

#2: Matanuska Glacier Cave

Small dark ice cave tunnel on the Matanuska Glacier in Alaska. The cave is dark but light shines on the clear ice inside.

Caves on the Matanuska Glacier are extremely dangerous but worth the trip if done with a professional.

©DCrane08/iStock via Getty Images

The Matanuska Glacier is the most loved of all the caves in Alaska. It spans over 27 miles and is four miles long with some fantastic views. Viewing the caves is only available via tour. The glaciers are extremely dangerous and slippery. Plus, there are caves that go through inspection and are clear to help make the journey safe.

Unlike the previous caves, these are light blue, white, and black hues. The walls of the caves are thick and lustrous, while the floors have the Matanuska glacier underneath. Other caves tend to reflect the light, and the Matanuska caves keep a deep blue color throughout. It’s a stunning sight, and the company is constantly finding new areas of the glacier to tour.

Luckily, It’s only a two-hour drive from Anchorage, the state’s central hub. Visitors can schedule a tour online and pay. Then, they can meet their tour guide at the location and hike up the glacier into the caves.

#3: Spencer Glacier

Looking straight up a vertical moulin or ice cave on the Spencer Glacier in Alaska

The mere height of Spencer Glacier results in some unique caves that are exceptionally deep.

©DCrane08/iStock via Getty Images

Spencer Glacier is a unique destination even for Alaskans due to its intimidating 3,500-foot rise. Located in Chugach National Forest, the Spencer Glacier is one of the favorites for ice hikers who want a challenge. The trek can be done either alone or by hiring a tour guide. 

Here, the ice caves are what you would consider meltwater. Meltwater is a fancy word to describe ice caves that have melted water from the surrounding glaciers. The melting ice in Spencer Glacier trickles through the caves and creates these stunning blue ice walkways. Inside, you’ll hear bits of running water as the glacier’s meltwater constantly forms the cave.

The glacier is 60 miles south of Anchorage, a few hours’ drive. The trip is somewhat tedious, as you’ll have to follow alongside mountain pathways to get there. It might be impossible in winter, as the surrounding areas tend to be very steep and have plenty of falling snow.

#4: Zina Cave

Tongass National Forest, Alaska - US State, Adventure, Backgrounds, Beauty

Tongass National Forest covers 500 miles of southeastern Alaska.


Tlacatzinacantli, which translates into “bat god,” is a cave inside the Tongass National Forest in Southeastern Alaska. The cave is on Prince of Wales Island, one of over 600 caves. What sets this cave apart from others is that it’s the oldest cave in the state’s southeastern region.

The cave’s opening is a small tunnel into which animals can fit. Inside the cave are multiple tunnels branching off from the main entrance. A large river can be found at the cave’s depths.

#5: Hole 52 Cave

Light from a corner of Postojna cave, Slovenia

Natural trap caves can be found all over the Tongass National Forest.

©Nicola Borrani/Shutterstock.com

Hole 52 Cave is located inside the Tongass National Forest on Kupreanof Island. It’s a natural trap cave that traps anything that falls into it. The cave was discovered in 1998 by scientists who found animal remains.

The cave is very narrow and has lots of horizontal passages within. Inside are vertical pits, which can be very dangerous. Animals like bears and porcupines travel into the cave and get stuck in the vertical pits. For that reason, it’s advised to be cautious when exploring in and around the cave.

#6: Puffin Grotto

USA, Alaska, Craig. Sea lions on rocks in Cape Addington.

Ice caves can be found across Cape Addington, especially in the mountainous areas.

©Danita Delimont/Shutterstock.com

Puffin Grotto is one of the more desolate ice cave locations in Southeast Alaska. It’s a part of Noyes Island near Cape Addington and is a stunning sight. The entranceway is spectacular and can be seen from miles away. A trip by boat is the only way to get to the cave. Puffin Grotto Cave gets its classic name due to all of the cute puffins nesting around the openings of the caves.

#7: On Your Knees Caves

Alaska Prince of Wales island aerial view from float plane

Prince of Wales Island has many small cave systems located throughout its forest.

©Andrea Izzotti/Shutterstock.com

On Your Knees Cave (OYKC), also known as Shuka Kaa, which translates into “Man Ahead Of Us,” is located on the northern end of Prince of Wales Island. Its specific location on the island is on Protection Head and is a popular place for outdoor activities.

The OYKC is an archeological site that holds the Tlingit clan’s cultural and spiritual artifacts. Dr. Timothy Heaton excavated the cave in 1996, discovering human remains, animal bones, stone tools, and more. To this day, the cave is a popular place for archeologists and paleontologists.

#8: Kushtaka Cave

Hatchery Creek Falls Trail, Prince of Wales Island, Alaska

Image: vagabond54, Shutterstock


Kushtaka is a Tlingit word that translates to “Land Otter Man,” a name for shape-shifting creatures that resemble a man and an otter. The cave is on the east side of El Capitan Passage on Prince of Wales Island.

Visitors must crawl through the small opening before opening to a bigger area. Plenty of animal remains are located throughout the cave, making it favored by paleontologists. Aside from that, the cave has a wealth of geological history, making it popular for geologists and spelunkers.

#9: Bumper Cave

Drone view of Clarence Strait Prince of Wales Island Alaska BlueAutumn Day

Image: Alaska Drones, Shutterstock

©Alaska Drones/Shutterstock.com

Bumper Cave is a smaller cave on Calder Mountain in Point Baker, AK. On Prince of Wales Island, there are much bigger caves, and Bumper Cave is drastically smaller than others. However, it has been a popular area where brown bears roam. We know this due to the remains that are found inside the caves. Visitors can explore the caves famous for spelunking, hiking, and more. 

#10: Devil’s Canopy Cave

Fall at Log Jam Creek

©iStock.com/Steve Howard

Devil’s Canopy Cave is on Prince of Wales Island. The cave is a part of the Karst hydrologic complex, a landscape created by acidic waters eroding porous rocks. The cave is known as the Devil’s Canopy due to a plant canopy outside the cave entrance resembling a trap, giving the cave an ominous look. 

The surrounding canopy of plants outside the cave contributes to its danger. Visitors must watch for the stream that flows into the cave, as it can cause people to slip. Animals and people have fallen due to the excess foliage.

#11: El Capitan Cave

Stairway lead down from El Capitan Cave, Prince of Wales Island, Alaska

Reaching El Capitan Cave can be difficult, but luckily stairs and ramps have been installed.


The El Capitan Cave, commonly known as El Cap by locals, is in Naukati, AK, inside the Tongass National Forest. Currently, El Capitan Cave is known as the longest cave in the state, spanning over two miles. It’s a popular destination for those who want to explore caves, as it is a geological treasure that existed for more than 400 million years.

Visitors are allowed inside the cave for tours that last two hours. At first, the beginning of the cave is easy to trek and often is a great place. However, the further inside the cave you go, the rougher the terrain. Due to this, tours are halted at the 500-foot mark to prevent injuries.

#12: Kit’ n’ Kaboodle Cave

Tongass National Forest, Alaska - US State, Adventure, Backgrounds, Beauty

Tongass National Forest covers 500 miles of southeastern Alaska.


Kit n Kaboodle Cave is located in Gold Harbor on Dall Island and is protected by federal law. It’s another cave inside Tongass National Forest that was first discovered in 1992 by the USDA Forest Service. 

The cave Kit’ n’ Kaboodle is an archaeological site known for its fossils. Many scientists and archaeologists have discovered numerous types of plants and animal fossils inside the cave. Paleontologists and biologists

The site is part of a complex solution cave system that is inside limestone bedrock. Now, the cave has multiple entrances, levels, and passageways. The cave produces sounds of water trickling within the cave, which echoes to the outside.

#13: Blowing in the Wind Cave

Kodiak Island

Kodiak Island consists of mountainous regions, forested areas in the north and east, and lowlands in the south


The Blowing in the Wind Cave is near El Capitan Cave on Kodiak Island. Despite it looking like a regular cave, it produces a unique “breathing” sound due to barometric pressure. This creates an unusual gust of air that blows throughout the cave. The traveling air causes a breathing or howling effect that echoes to the entrance. 

#14: Trail Creek Caves

The Trail Creek Caves are a system of 12 connected caves in the Bering Land Bridge National Preserve on the Seward Peninsula. Discovered in 1928 by Taylor Moto and Alfred Karmmun. They found multiple archeological artifacts, including tools from ancient hunters and bone fragments dating back over 8,500 years.

#15: Root and Kennicott Glaciers

Two hikes walk across the top of Root Glacier in eastern Alaska.

©Jon C. Beverly/Shutterstock.com

The Root and Kennicott Glaciers are located in Wrangell-St. Elias National Park and Preserve have the most impressive caves. The Root Glacier spans more than 5,000 square miles and features tours. These caves are constantly warping and changing due to the glaciers. 

Treks inside the cave can be dangerous, so you must book a tour. Each tour will provide you with the necessary equipment needed to help keep you safe.

Summary Caves in Alaska

1Mendenhall Ice Caves
2Matanuska Glacier Cave
3Spencer Glacier
4Zina Cave
5Hole 52 Cave
6Puffin Grotto
7On Your Knees Caves
8Kushtaka Cave
9Bumper Cave
10Devil’s Canopy Cave
11El Capitan Cave
12Kit ‘n’ Kaboodle Cave
13Blowing in the Wind Cave
14Trail Creek Caves
15Root and Kennicott Glaciers

The photo featured at the top of this post is © DCrane08/iStock via Getty Images

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About the Author

Christina Eck is a writer at A-Z Animals, primarily focusing on animals and travel. Christina has been writing about and researching animals for more than seven years. She holds a Bachelor's Degree from the University of Alaska, Anchorage, which she earned in 2019. As a resident of Washington State, Christina enjoys hiking, playing with her dog, and writing fiction and non-fiction pieces.

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