Yugama Crater Lake
A stunning, highly acidic emerald crater lake on Mount Kusatsu-Shirane, offering dramatic volcanic scenery.
Highlights
Must-see attractions
Social
From TikTok & Reddit
Best Time
Avoid crowds for peaceful views
Yugama Crater Lake
Best Time
Avoid crowds for peaceful views
Highlights
Must-see attractions
A stunning, highly acidic emerald crater lake on Mount Kusatsu-Shirane, offering dramatic volcanic scenery.
"A mesmerizing volcanic crater lake with striking emerald green, acidic waters. 
Check Volcanic Activity
Always verify current volcanic activity and access restrictions before visiting.
Wear Sturdy Shoes
The terrain can be uneven; comfortable walking shoes are recommended.
Highlights
Discover the most iconic attractions and experiences
Yugama Crater Lake
Mount Kusatsu-Shirane
A mesmerizing volcanic crater lake with striking emerald green, acidic waters.
Mount Kusatsu-Shirane Views
Surrounding slopes
Panoramic mountain scenery and volcanic landscapes surrounding the lake.
Plans like a pro.
Thinks like you
Planning Your Visit
Volcanic Activity & Access
Best Viewing Points
Best Times
Insider Tips
from TikTok, Instagram & Reddit
Check Volcanic Activity
Always verify current volcanic activity and access restrictions before visiting. +1
Wear Sturdy Shoes
The terrain can be uneven; comfortable walking shoes are recommended.
Bring a Camera
Capture the unique emerald hue of the lake and surrounding volcanic beauty.
Respect the Environment
This is an active volcanic area; stay on marked paths and do not disturb nature.
Tips
from all over the internet
Check Volcanic Activity
Always verify current volcanic activity and access restrictions before visiting. +1
Wear Sturdy Shoes
The terrain can be uneven; comfortable walking shoes are recommended.
Bring a Camera
Capture the unique emerald hue of the lake and surrounding volcanic beauty.
Respect the Environment
This is an active volcanic area; stay on marked paths and do not disturb nature.
What Travellers Say
Reviews Summary
Visitors find Yugama Crater Lake a beautiful and unique natural sight, often described as mesmerizing with its striking emerald waters. However, access can be a significant issue due to frequent closures related to volcanic activity, leading to disappointment for some. +1
"Still closed end of June 25 :( Nice sight though."
Aljaz Kajtna
"Good one also good and lovely place to your family and friends for the first time. Lovely place for visiting and tourists attract. Very good performance by this area. Many people came here and enjoy the beauty of this nature conservation of the best sound of the nature. Enjoy your day going there and fill the beauty."
Tanmoy Saha
"A crater lake near the Mt Kusatsu shirane.
It is not possible to visit it currently (2022 March) as the area is restricted due to increased volcanic activity. The emerald green water of lake is acidic in nature."
Naresh Deora
What People Like
What People Dislike
Frequently Asked Questions
🚇 🗺️ Getting There
Yugama Crater Lake is located near Mount Kusatsu-Shirane in Gunma Prefecture. Access is typically via car or bus to the Mount Kusatsu-Shirane area. From the parking lot, it's a short walk to viewing points.
Round-trip direct buses are available from Tokyo to Kusatsu Onsen, which is a base for exploring the area. From Kusatsu Onsen, you may need to arrange local transport or taxis to reach the vicinity of Yugama.
Kusatsu Onsen is the closest well-known tourist hub, offering accommodations and access to the surrounding natural attractions.
Yes, driving is a common way to reach the area. There are parking facilities near Mount Kusatsu-Shirane, from which you can access viewing spots for Yugama.
While specific tours solely for Yugama might be less common, many tours of the Kusatsu Onsen and Mount Kusatsu-Shirane region will include stops at or near the crater lake.
🎫 🎫 Tickets & Entry
Generally, there is no admission fee to view Yugama Crater Lake itself. However, access to the surrounding areas or specific facilities might incur charges.
Yugama Crater Lake does not have set opening hours as it is a natural attraction. However, access can be restricted due to volcanic activity or weather conditions.
No, Yugama Crater Lake can be closed to visitors due to increased volcanic activity or safety concerns. It's crucial to check the latest status before planning your trip. +1
Reports indicate closures in March 2022 and late June 2025 due to volcanic activity. Always check current advisories. +1
Yes, due to its nature as an active volcanic crater, access can be restricted. Visitors are advised to stay on designated paths and heed any warnings.
📸 📸 Photography
Early morning or late afternoon can offer softer light for photography. The vibrant emerald color of the lake is striking in most lighting conditions.
A wide-angle lens is great for capturing the expansive volcanic landscape. A telephoto lens can be useful for distant views of the crater.
Drone usage is typically restricted in national parks and sensitive natural areas, especially around active volcanoes. It's best to check local regulations before flying.
The unique, vibrant emerald green color of the acidic water against the stark volcanic terrain creates a dramatic and photogenic scene.
While there are designated viewing areas, it's important to stay within safe zones and respect any barriers or signs.
🎫 🏞️ Onsite Experience
The primary activity is admiring the unique emerald crater lake and the surrounding volcanic scenery. Short walks to viewpoints are common.
Safety depends on current volcanic activity. Always check official advisories. The lake's water is highly acidic and should not be approached closely. +1
Expect volcanic landscapes with rocky paths and potentially uneven ground. Sturdy footwear is essential.
Facilities may be limited directly at the crater viewing areas. It's advisable to use restrooms and purchase any necessities in nearby towns like Kusatsu Onsen before heading up.
A visit typically takes 1-2 hours, depending on how much time you spend at the viewpoints and any short walks you take.
For Different Travelers
Tailored advice for your travel style
Nature Enthusiasts & Photographers
Early morning or late afternoon light can enhance the dramatic scenery. Remember to bring your best camera gear and a wide-angle lens to capture the scale of the crater and its surroundings. Be prepared for the possibility of restricted access due to volcanic activity. Flexibility in your itinerary is key. When accessible, the short walks to viewpoints are rewarding, offering a chance to immerse yourself in this powerful natural environment.
Day-Trippers from Tokyo
Allocate sufficient travel time, as the journey can take several hours each way. Prioritize checking access status for Yugama before you depart, as closures can impact your plans.
Deep Dives
In-depth insights and expert knowledge
Understanding Yugama's Volcanic Nature
The volcanic activity in the area is closely monitored, and access to the crater rim and surrounding areas can be restricted or completely closed off without notice. This is a crucial factor for any visitor to consider, as plans may need to be adjusted based on real-time safety assessments.
When accessible, the landscape around Yugama offers a stark beauty, characterized by volcanic rock formations and sparse vegetation adapted to the harsh environment. It's a powerful reminder of the Earth's dynamic forces at play.
Accessing Yugama: Travel Tips
Driving offers flexibility, with parking available near the mountain's summit. From these parking areas, short, well-maintained paths lead to viewpoints overlooking Yugama.
It's important to note that even on weekdays, the area can become crowded, especially during peak seasons like autumn foliage. When planning your trip, always check the latest public transport schedules and road conditions, especially during winter months when snow can impact accessibility. Being prepared with comfortable footwear is also key, as the volcanic terrain can be uneven.
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