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The Hidden Swamp Secret of Hokkaido’s Second Blue Pond Park Unveiled

Published: 2026-09-25 👁 100 views
Last updated 2026-09-25 — In recent years, Japan’s stunning hidden gem—the Blue Pond—has gained immense popularity. With the rise of social media and its selection as one of Apple’s desktop backgrounds, this secret spot has gone viral online. Located in Biei Town, Hokkaido...

By MOOK Scenic Spots Jun(e), compiled and reported

In recent years, Japan’s stunning hidden gem – the Blue Pond – has gained immense popularity. With the rise of social media and its selection as one of Apple’s desktop backgrounds, this secret spot has gone viral online. Located in Biei Town, Hokkaido, the minerals in the water, combined with sunlight, create tiny particles that give the pond its distinctive blue hue, earning it the nickname "Pool of the Gods' Children." However, after a typhoon in 2016 caused damage to part of the area, it remains closed to this day. Despite this, just like Taiwan’s hidden spots such as Eagle Rock Point or Bayan Shuizhongxin, even when closed, similar hidden gems are soon discovered by netizens. Similarly located in Hokkaido, Lake Tōnuma Park boasts clear lakes fed by natural springs. The color of the water changes over time—from light blue to blue-green—and this off-the-beaten-path attraction has started generating local buzz.

Tōnuma Park, a hidden scenic spot in Furano, features a mysterious and beautiful swamp (Image credit: Trip’s - yuta.d)

The swamp in Tōnuma Park is fed by natural spring water, with extremely high water transparency, making it a rare unfrozen swamp even in winter (Image credit: Ekinavi)

The color of the swamp in Tōnuma Park changes over time, ranging from light blue to blue-green (Image credit: Ekinavi)

The plants in Tōnuma Park are all native, not artificially planted (Image credit: Ekinavi)

Tōnuma Park is home to over 40 species of wild birds and ducks, as well as wildlife such as Ezo squirrels, Ezo deer, foxes, and raccoon dogs. Artifacts such as Jomon pottery and stone tools dating back 8,000 to 10,000 years have also been discovered here (Image credit: Furano Tourism Association)

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