Okama Crater

japan‘s Natural Okama Cooking Pot: A Breathtaking Caldera Lake


Nestled on the border of Yamagata and Miyagi prefectures in Japan, Mt. Zao stands tall as one of Tohoku’s most prominent mountains. Within the mountain lies the Okama Crater, a breathtaking caldera lake that is famous for its ever-changing colors. The deep, water-filled crater resembles the shape of an “okama” cooking pot, which is how the volcano derived its name. This natural wonder attracts visitors from all over the world who are captivated by its beauty and unique geological features.

The Changing Colors of the Caldera Lake:

One of the main attractions of Okama Crater is the mesmerizing change in colors of the caldera lake. The lake’s hues fluctuate depending on various factors, including the intensity of daylight. On a typical day, visitors can expect to see various shades of deep green and blue, creating a serene and tranquil atmosphere. However, if you’re lucky, you might witness the lake transform into a brilliant emerald or turquoise hue, leaving you in awe of nature’s wonders.

Alpine Flowers in Spring:

Another highlight of visiting Mt. Zao and Okama Crater is the opportunity to witness the vibrant alpine flowers in bloom during spring. As the snow melts and the weather warms up, the mountain slopes become adorned with a colorful carpet of flowers. Walking amidst these blooming beauties is like stepping into a fairy tale, where every step reveals a new burst of color and fragrance. It’s a truly magical experience that should not be missed by nature enthusiasts and photography enthusiasts alike.

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Autumn Leaves on the Slopes of Mt. Zao:

In autumn, Mt. Zao transforms into a canvas of fiery yellows, oranges, and reds as the leaves change color. The vibrant foliage creates a picturesque scene that attracts visitors from far and wide. The crisp autumn air, coupled with the stunning scenery, makes it the perfect time to explore the mountain and witness nature’s artistry. Whether you choose to hike or take a leisurely stroll, the vibrant autumn leaves will leave you enchanted and inspired.

How to Get There:

Reaching Mt. Zao and Okama Crater is relatively easy, with options available for both public transport and rental cars. From Miyagi prefecture, the nearest train station is Shiroishi-Zao Station. Visitors can take the JR Tohoku Shinkansen from Tokyo to Shiroishi-Zao Station, followed by a bus ride to Zao-Katta Sancho. Alternatively, if you prefer to drive, you can use the Miyagi Prefecture side of the Zao Echo Line and park your car just below Mt. Kattadake. From there, it’s only a short walk to the viewing platform above the lake.

If you’re coming from Yamagata prefecture, you can board a train bound for Kaminoyama at JR Yamagata Station. Upon arrival, a free shuttle bus is available to take you to the Katta parking area. From there, you can take the Zao-Katta ski lift and walk a few minutes to the viewing platform. Similar to Miyagi, driving is also an option, with the Yamagata Prefecture side of the Zao Echo Line providing access to the parking lot below Mt. Kattadake.

For those staying in Zao Onsen, a popular hot spring resort, you can take the Zao Ropeway to the upper station and embark on a 45-minute hike to reach Okama Crater’s lake. It’s a great way to combine relaxation with adventure, as you soak in the hot springs before or after your hike.

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Hike to the Top for the Best Views:

While there are various ways to reach Mt. Zao and Okama Crater, hiking remains one of the most rewarding options. Scaling the mountain on foot allows you to fully immerse yourself in nature and appreciate the beauty of the surroundings. Whether you choose the shorter five-minute hike or the longer 45-minute trek, reaching the top of Mt. Zao offers unparalleled views of the caldera lake and the surrounding landscape. It’s a chance to witness the grandeur of nature and feel a sense of accomplishment as you conquer the mountain.

Safety First:

As with any outdoor activity, safety should always be a top priority when visiting Mt. Zao and Okama Crater. While Mt. Zao is an active volcano, there have been no eruptions in recent history. However, it’s essential to stay informed about any potential risks and heed official advice before embarking on your journey. The government closely monitors the area with observation posts and conducts regular field tests to ensure the safety of visitors.

In addition to volcanic activity, hikers should also be aware of common hazards associated with the outdoors. Wildlife encounters, changing weather conditions, and steep terrain are factors to consider when planning your hike. It’s crucial to wear appropriate gear, stay hydrated, and protect yourself from the sun. By exercising caution and good judgment, you can enjoy a safe and memorable experience at Mt. Zao and Okama Crater.


Mt. Zao’s Okama Crater offers a unique and awe-inspiring experience for nature lovers and adventure seekers alike. From the ever-changing colors of the caldera lake to the vibrant alpine flowers in spring and the fiery autumn leaves, the mountain showcases the beauty of Japan’s natural landscapes. Whether you choose to hike, take a scenic drive, or relax in the nearby hot springs, a visit to Mt. Zao and Okama Crater is sure to leave you with lasting memories. So, pack your bags, prepare your camera, and embark on a journey to witness the wonders of this remarkable destination.

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Address And Maps Location:

Zao-machi, Katta-gun, Miyagi-ken

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