30 Hidden Ice Caves Around the World You Can Explore in 2025
Glaciers are shrinking, and ice caves are disappearing before our eyes. By 2030, many of these breathtaking formations may no longer exist. But this year, you have the rare chance to explore 30 hidden ice caves around the world—places so unique, they deserve a spot on your bucket list.
Imagine kayaking into a glowing blue cathedral beneath Alaska’s glaciers or hiking to a volcanic ice tunnel in Kamchatka, where fire and frost collide in spectacular fashion. If you’ve ever dreamed of stepping into a world of crystalline walls and frozen rivers, this is your chance to turn those dreams into reality. But act fast—these icy treasures won’t wait. This guide will show you where to find them, how to reach them, and why visiting responsibly is more important than ever.
1. Eisriesenwelt Ice Cave, Austria
Known in German as “The World of the Ice Giants,” Eisriesenwelt is the largest ice cave in the world, stretching over 26 miles. Formed over millions of years by water erosion, it wasn’t explored until 1879 due to local superstitions about it being an entrance to hell. Inside, the temperature stays at 32°F year-round. Visitors can reach it via a steep trail or a cable car, followed by a guided tour illuminated by traditional carbide lamps.
2. Mendenhall Ice Caves, USA
The Mendenhall Ice Caves beneath Alaska’s Mendenhall Glacier are a surreal labyrinth of vibrant blue ice. Constantly shifting due to glacial movement, these caves offer a fleeting glimpse of Alaska’s changing landscape. Accessible via a challenging kayak and hike combination, the temperature inside stays around 32°F even during the summer. Guided tours showcase the natural beauty of the glacier’s icy interiors, making this a must-visit destination for adventurers and photographers alike.
3. Langjökull Ice Tunnel, Iceland
Located inside the Langjökull Glacier, this man-made ice tunnel is Europe’s largest of its kind. Opened in 2015, the tunnel takes visitors deep into the glacier’s icy heart, where the temperature remains between 28–32°F year-round. Tours include LED-lit pathways, allowing visitors to see ice layers that date back hundreds of years. The tunnel is accessible by super jeep, offering an unforgettable opportunity to learn about glacial history in a stunning, controlled environment.
4. Rhone Glacier Ice Grotto, Switzerland
The Rhône Glacier Ice Grotto is carved anew every year near Furka Pass, ensuring a fresh experience with each visit. This dazzling grotto, illuminated by natural light, stays at a cool 30°F inside. First explored in the early 19th century, it has been a popular stop for travelers seeking unique natural beauty. Visitors can easily access the grotto via a scenic drive and enjoy learning about the glacier’s retreat and its stunning icy interiors.