Zao Onsen Ski Resort is one of the largest snow resort areas in the Tohoku region of Japan. Located on the western foothills of the Zao Mountains in Yamagata City, Yamagata Prefecture, it offers a wide variety of slopes and courses where visitors can enjoy skiing and snowboarding throughout the day.
The resort is particularly famous for its spectacular frost-covered trees, known as “snow monsters” (juhyo). The trees covering the upper slopes create an extraordinary winter landscape that has become internationally recognized. With courses ranging from gentle beginner slopes to challenging terrain for advanced skiers, Zao offers something for a wide range of visitors.
Another distinctive feature is its close connection with Zao Onsen. The ski resort and historic hot spring town form a single destination, allowing visitors to combine winter sports with relaxing hot spring baths. Zao has also attracted international attention, including recognition by CNN among Japan’s beautiful destinations.
The Juhyo Kogen Course is one of Zao’s signature runs. It can be reached using the Zao Ropeway Summit Line and offers spectacular views of the frost-covered trees from January through March.
Although it reaches the upper part of the mountain, the course can also be enjoyed by intermediate and beginner-level skiers. From Jizo Sancho Station, the route passes through the Hyakumannen Slope area and continues down toward the Yokokura Slope, creating a long and scenic run.
The Zange-zaka Course is designed for advanced skiers. It is relatively narrow and can become icy, creating challenging conditions for those looking for a more demanding descent.
The combination of steep and firm terrain makes it unsuitable for beginners but appealing to experienced skiers seeking a challenge.
The Ohira Course provides a long descent from the southern slopes toward the Uwanodai area. The course extends for approximately 5 km.
Some sections are relatively gentle and suitable for less experienced skiers. Chairlifts can also be used in some areas to avoid sections that would otherwise require walking.
The Yokokura Wall is located on the northern slope of Yokokura Slope and has a maximum gradient of approximately 38 degrees.
The course is characterized by substantial bumps and uneven terrain, along with frequent icy sections. The combination of steepness and large changes in elevation makes it technically demanding and requires a high level of skiing ability.
The Karakosawa Wall appears on the ski resort map as the Seiler Course. It is the main course of Paradise Slope and is located at a relatively high elevation, where snowfall is often abundant and snow conditions can be good.
The course generally has fewer bumps than the Yokokura Wall, although icy conditions can occur depending on the season. Near the lower section, it joins a beginner course, creating an area where skiers heading toward the Paradise Lift, Kotan Slope, and Ohira Course may cross paths. Visitors should therefore pay close attention to other skiers.
Zao Ski Jumping Hill is an FIS-certified ski jumping venue and hosts the Women’s Ski Jumping World Cup every year.
The facility can also accommodate summer ski jumping and night competitions. It is known as the largest normal hill ski jumping facility in Japan.
For visitors interested in winter sports beyond alpine skiing, the jumping hill provides another way to experience the sporting culture of Zao.
The ropeways are an important part of the Zao experience, providing access to the higher slopes and the famous frost-covered tree area.
Zao Sanroku Station stands at an elevation of approximately 855 m, while Juhyo Kogen Station is at approximately 1,331 m.
The Zao Ropeway Summit Line connects Juhyo Kogen Station with Jizo Sancho Station, located at approximately 1,661 m.
The Zao Chuo Ropeway connects Zao Onsen Station, at approximately 864 m, with Toro Kabu Station, at approximately 1,387 m.
These ropeways make it possible to reach the upper mountain areas and the famous Juhyo frost-covered tree fields without skiing. They are therefore also useful for visitors who simply want to enjoy the winter scenery.
During winter, the frost-covered trees are illuminated at night, creating a spectacular landscape of snow and ice. The illuminated trees take on an almost otherworldly appearance.
Zao Base Center Jupeia is one of the largest public spaces in the Zao area. It houses a variety of services, including ski school reception, lift ticket sales, an information counter, restaurants, and rental shops.
It serves as a convenient base for visitors preparing for a day on the slopes.
Zao Pension Village is a collection of pensions located near the foot of the mountains. The area also hosts seasonal events such as open garden activities, providing an opportunity to enjoy the scenery around the accommodations.
The Juhyo, or frost-covered trees, are one of the most famous sights at Zao Onsen Ski Resort. From around January to February, vast areas of trees become covered with layers of snow and ice, creating enormous white formations often nicknamed “snow monsters.”
The phenomenon occurs when moisture and snow carried by winter winds freeze onto the branches of the trees. As the layers grow, the trees develop unusual shapes and appear to transform into mysterious white figures.
The frost-covered tree fields can be viewed using the ropeway, making them accessible even to visitors who do not ski.
During the winter season, the Juhyo are illuminated at night. The lighting brings out the strange shapes of the frozen trees and creates a completely different atmosphere from the daytime landscape.
For visitors to Zao in winter, viewing the illuminated snow monsters is one of the area’s most memorable experiences.
Zao Onsen is a historic hot spring resort with a history of approximately 1,900 years. Located at an elevation of around 880 m on the western foothills of the Zao Mountains in southeastern Yamagata City, it has long been known as Takayu or Mogami Takayu.
Together with Shirabu Onsen in Yamagata Prefecture and Takayu Onsen in Fukushima Prefecture, Zao Onsen is traditionally counted among the Three Takayu Hot Springs of the Oshu region.
The spring water at Zao Onsen is classified as an acidic, sulfur-containing aluminum sulfate-chloride spring. Under the older Japanese classification system, it was described as a strongly acidic alum and green vitriol spring containing hydrogen sulfide.
The hot spring area has 47 individual sources belonging to five source groups. The total flow is approximately 5,700 liters per minute, equivalent to around 8,700 tons of water per day.
The strongly acidic water has traditionally been associated with various bathing benefits, particularly for skin conditions, and the hot spring has also been called “Hime no Yu,” or “Princess’s Hot Spring,” in reference to its reputation for leaving the skin feeling smooth and clean.
Zao Onsen has several public bathhouses and day-use bathing facilities, all located close to the ski resort. The hot spring town is lined with dozens of inns and hotels, and including company retreat facilities, there are more than 120 accommodations and other facilities in the wider area, although not all of them use Zao’s hot spring water.
The Sukawa River flows through the hot spring town, and Sukawa Onsen Shrine, dedicated to the hot spring, stands upstream.
This close relationship between the ski slopes and hot spring town is one of Zao’s greatest attractions. Visitors can spend the day skiing or sightseeing among the snow monsters, then return to the town to relax in the warm mineral waters of the historic hot spring resort.
Although Zao Onsen Ski Resort is best known for its winter scenery and snow sports, the surrounding Zao Mountains and hot spring town attract visitors throughout the year.
In winter, the main attractions are skiing, snowboarding, the Juhyo snow monsters, and nighttime illumination. The ropeways also allow non-skiers to experience the spectacular high-mountain scenery.
Outside the winter season, visitors can explore the mountains and enjoy the hot spring resort in a quieter setting. The combination of mountain scenery, outdoor activities, historic hot springs, and traditional Japanese culture makes Zao a distinctive destination in Yamagata.
Zao Onsen Ski Resort is more than a ski area. Its extensive slopes, challenging terrain, spectacular frost-covered trees, mountain ropeways, ski jumping facilities, and historic hot spring town come together to create one of Tohoku’s most distinctive mountain resorts.
For international visitors, Zao offers the opportunity to experience several aspects of Japan in one trip: winter sports, dramatic mountain scenery, the famous “snow monsters,” and a traditional onsen town.
A visit to Zao is especially rewarding in winter, when the mountains are covered in snow and ice and the Juhyo trees create an extraordinary landscape. After enjoying the slopes or viewing the illuminated snow monsters, soaking in the historic waters of Zao Onsen provides a relaxing way to end the day.