Goshikunuma

Goshikinuma is the collective name for a group of lakes and marshes scattered across the Urabandai area in northern Fukushima Prefecture; its official name is the “Goshikinuma Lake and Marsh Group.” In 1888 (Meiji 21), a steam explosion occurred in the area north of Mount Bandai’s summit, including the small volcanic cone of Kobandai. The resulting landslide from the mountain collapse blocked the river, creating about 300 lakes and marshes in this region. In 2016, it was awarded one star in the Michelin Green Guide and has since attracted attention from both domestic and international visitors.

Origin of the Name and Changes in Color
“Goshiki” does not mean five ponds; rather, it refers to the many different colors seen from pond to pond. The lake surfaces display a variety of hues such as emerald green, cobalt blue, turquoise blue, emerald blue, and pastel blue. Their colors are said to change depending on weather, season, time of day, viewing angle, and conditions such as volcanic substances and mineral particles in the water, acidity, and water depth. This ever-changing appearance is one of its greatest attractions.

Main Lakes and Highlights
Bishamonnuma: The largest lake in the Goshikinuma group. Rowboats are available for enjoyment (usually from April to November; closed in winter). Many carp swim here, and if you spot a carp with a red heart pattern, it is said to bring good fortune.

Aonuma: Known for its vivid, clear blue color, it symbolizes the “mysterious lakes and marshes.”

Akanuma: A unique landscape where the surrounding plants and trees appear red due to iron in the water.

Midoronuma: A distinctive marsh said to appear in three colors depending on the viewing angle and lighting.

Yanaginuma: A highly transparent marsh with an appealing clear, light-blue color.

Goshikinuma Nature Trail
The “Goshikinuma Nature Trail,” which connects the lakes and marshes, is about 3.6 km long and takes roughly 1 hour and 30 minutes on foot, making it suitable for beginners. (Some guides list it as approximately 4 km one way, taking 1 hour 20 minutes to 2 hours.) The trail has entrances, parking areas, and bus stops on both the east side (Goshikinuma Entrance/Bishamonnuma side) and the west side (Urabandai Kogen Station/Yanaginuma side), and it is generally convenient to take a bus to the opposite side first and then walk one way back. The path is gentle, but it can be slippery after rain, so trekking shoes or other slip-resistant footwear are recommended. There are also scenic viewpoints along the way, offering magnificent views of Mount Bandai, one of Japan’s 100 Famous Mountains, alongside the colorful lakes and marshes.

Seasonal Appeal
From spring to summer, the colors of the lake surfaces stand out beautifully against fresh and deep greenery. In autumn, the fall foliage is usually at its best from mid-October to early November. In winter, visitors can walk the trail wearing snowshoes and enjoy the magical lakes and marshes covered in snow. During the snowy season, the summer trail is hidden, so it is recommended to be accompanied by a local guide to avoid getting lost or slipping off the path.

Pets and Safety Etiquette
Pets are allowed on the trail, but they must be kept on a leash at all times, and all waste must be taken home with you. Wild animals such as bears and monkeys also inhabit the area, so care must be taken not to provoke them. As this is a Special Protection Zone within a national park, please refrain from collecting plants, animals, or stones, and do not leave the designated trail.

Access Tips
By car, it takes about 20 minutes from the Inawashiro-Bandai Kogen IC on the Ban-etsu Expressway to the Urabandai area. By public transportation, take a route bus from JR Inawashiro Station and get off at either “Goshikinuma Entrance” or “Urabandai Kogen Station.” Rowboat service at Bishamonnuma depends on weather and season, so it is a good idea to check the latest information before visiting.

Important Distinction
The crater lake “Goshikinuma” viewed from the Jododaira side or the summit of Mt. Issaikyo (commonly called “the Witch’s Eye”) is a different place from the Goshikinuma Lake and Marsh Group in Urabandai. When planning your trip, please make sure to confirm your destination.