The Geothermal Heat of Bokke, Revealed by the Winter

The Bokke Nature Trail highlights plants that remain vibrant even in the bitter cold of nearly -30°C at Lake Akan, thanks to the area's geothermal heat.


Nearby geothermal hot spots allow ground-level plants such as wood sorrel, campylopus japonicus, and hypnum plumaeforme to retain their green color throughout the winter and provide a habitat where various cricket species can survive the cold and lack of food, allowing for the unique experience of hearing cricket sounds in the midst of the snow.
In addition, wildlife such as the ezo deer and red fox find the geothermal areas comforting and are often seen warming up in these places during the harsh cold.

The Contrast between Snowscapes and Geothermal Heat:

• The bokke hot spots scattered among the pristine snow create a surreal, ink-painted landscape.
• Steam rising from the snow-covered ground stands out in the crisp winter air, adding a mystical atmosphere.
• The interplay of light refracted by the temperature difference between the snow and the steam blurs the surrounding scenery, creating a dreamlike world.

A Unique Natural Phenomenon Visible Only in Winter:

• Around the bokke, the ground remains snow-free and warm due to geothermal heat, allowing insects such as crickets to inhabit the area.
• The geothermal activity also produces hot springs that allow warm baths even in winter.
• During the colder months, the gas and steam ejected from the bokke appear whiter and denser, creating a dramatic and intense scenery.

The Tranquility of Winter and the Power of Geothermal Heat:

• Winter sees fewer tourists, providing a calm environment in which to observe the activity of the bokke.
• It's a rare opportunity to feel the power and breath of nature.
• In the snow-covered silence, the sound of steam hissing and mud boiling from the bokke resonates with even greater intensity.

Tips for Enjoying the Bokke during Winter:

• Dress warm and wear slip-resistant shoes.
• Although the trails are maintained, some areas may be difficult to navigate, so caution is advised.
• As the area is home to wildlife, it's important not to approach or touch the animals.

The winter bokke offer a different charm to the lush green landscapes of the summer. Don't miss the opportunity to experience the contrast between snowy landscapes and geothermal heat, as well as these natural phenomena that are unique to winter.