Encounter the Aomori Ice Monsters and Explore Japan’s Surreal Winter Sculptures Created by Nature

History July 2, 2025 By David Niger

Japan is known for its delicate cherry blossoms, dramatic autumn foliage, and powdery ski resorts—but high in the mountains of Aomori Prefecture, winter unveils a sight unlike anything else on Earth. Here, towering trees are transformed into ghostly, frozen figures known as the Aomori ice monsters, a guileless wonder that looks straight out of a science fiction film.

These bizarre yet beautiful formations aren’t artificial. They are the result of unique climatic forces found only in specific regions of Japan. The Aomori ice monsters are more than just a visual spectacle; they represent the raw power and creativity of nature during the harshest season.

What Are Aomori Ice Monsters?

The Aomori ice monsters are actually snow-covered trees—more specifically, Japanese Maries’ firs—that have been sculpted by extreme winter weather conditions. Formed through a process known as juhyo, these trees become coated in thick layers of ice and snow, turning into towering, white creatures that resemble mythological beasts or aliens frozen mid-stride. These snowy trees, which range in height from 5 to 10 meters, create a fancy forest that covers the slopes of Mount Hakkoda. It is understandable why its beauty has captivated nature lovers, photographers, and skiers for so long.

Cold winds and moisture shape the Aomori ice monsters, turning the winter forest into a strange and beautiful scene. Cold Siberian winds from the northwest blow across the Sea of Japan, picking up moisture before slamming into the Hakkoda Mountains. As the wind-laden clouds climb in elevation, the moisture crystallizes into supercooled water droplets.

These droplets freeze instantly upon contact with the Maries’ first, forming layers of rime ice. Over time, with continuous snowfall and rime accumulation, the trees take on bizarre, lumpy shapes—arms, torsos, faces, even wings—depending on the direction and strength of the wind. The phenomenon occurs primarily between late December and early March, with the peak visual spectacle usually appearing from mid-January to late February.

Where to See the Aomori Ice Monsters

Mount Hakkoda, located in Aomori Prefecture in northern Honshu, is the most famous site to witness the Aomori ice monsters in full form. The Hakkoda Ropeway takes visitors to the summit of Mount Tamoyachidake, where panoramic views of the frozen forest await.

From the ropeway’s upper station, visitors can explore specially marked snowshoe trails or ski directly through the ice monster fields. For those less inclined to brave the cold, the views from the observatory deck are just as stunning. Other parts of Japan also host similar juhyo events—such as Mount Zao in Yamagata Prefecture—but the Aomori ice monsters are known for being the most dramatic and visually intense due to the area’s harsher winter conditions.

The term “ice monsters” is not just for flair. When you see them in person, it’s easy to imagine each frozen tree as a living creature captured mid-motion. Some appear to be crawling, others hunch over as if bearing invisible burdens. At dusk, their elongated shadows dance across the snow, and under the moonlight, they take on an eerie glow. Locals and tourists alike describe the experience of walking among the Aomori ice monsters as dreamlike—part serene, part surreal, and slightly haunting.

Winter Sports and Activities Around the Ice Monsters

The Hakkoda area isn’t just for sightseeing. It’s also one of Japan’s best-kept secrets for backcountry skiing and snowboarding. With an average snowfall exceeding 14 meters each winter, the region offers prime powder and relatively uncrowded slopes. Snowshoeing tours through the Aomori ice monsters are another popular activity. Guided treks are available for all skill levels and often include sunset hikes for a golden-hour view of the icy giants. For those who would rather not hike or ski, there are also snowcat tours, which take visitors through the terrain in cozy, heated vehicles.

Photographers from all over the world come to Mount Hakkoda each year to capture the Aomori ice monsters at their most spectacular. While twilight and nighttime settings enable long-exposure photographs that capture the frozen forest under starlight, early mornings provide clear light and undisturbed snow. A new dimension has also been introduced by drone photography, which shows the formations’ density and size from above. The scenery serve as a constant source of inspiration, regardless of whether you’re using a smartphone or a professional camera.

The Science of Rime Ice and Juhyo

For those curious about the science behind the spectacle, juhyo is a relatively rare meteorological event requiring very specific conditions:

Cold air temperatures (usually below -5°C)
High humidity and cloud moisture
Constant wind to deliver and freeze the supercooled droplets
Suitable vegetation — such as tall, narrow coniferous trees

This combination is found in only a few places worldwide, making the Aomori ice monsters a truly unique sight in Japan’s natural landscape.

As more travelers discover the Aomori ice monsters, there’s growing awareness of the need to keep this fragile environment. Off-trail skiing or hiking can damage young trees and disrupt the snowpack. Every visitors are encouraged to stick to designated paths and consider joining guided eco-tours to minimize their impact. Local initiatives promote environmental education, helping visitors understand the delicate balance that creates these formations each year.

How to Get There

To get to the Aomori ice monsters is easier than it might seem:

By Air: Aomori Airport has direct flights from Tokyo and Osaka.
By Train: Take the Tohoku Shinkansen to Shin-Aomori Station, and then move to a local train or bus to Hakkoda Ropeway Station.
By Car: A winter drive offers beautiful scenery, but snow tires or chains are essential.

Many travelers opt to stay in Aomori City and make a day trip to the mountains, though cozy lodges near the ropeway provide a deeper immersion in the snowy landscape.

Why the Aomori Ice Monsters Worth the Journey

In a country already bursting with a natural beauty and cultural marvels, the Aomori ice monsters stand out as something truly extraordinary. They serve as a tribute to the creative force of nature and the unique confluence of time, place, and weather.

A trip to see the Aomori ice monsters will be well remembered long after the snow melts, whether you’re an adventurer, a photographer, or someone who just wants to take in winter in all its splendor. As Japan continues to reopen to international visitors, this hidden gem in Aomori offers a fresh and unforgettable reason to explore the country’s colder, quieter north.