[Nagano] The mysterious ultramarine pond in Shiga Kogen [Onuma Pond]

There are several ways to get to Onuma Pond, but the shortest route is a hiking trail that takes 1 to 1.5 hours. Even in late July, the temperature in the forest is around 20°C, making it refreshing to walk through. The path is well-maintained, so it's recommended for beginners! Depending on the location and weather, Onuma Pond can appear a blue close to emerald green or a mysterious ultramarine... It's simply breathtakingly beautiful...!! (⊙⊙) In fact, Onuma Pond is an acidic pond with no fish. There is also a legend of a black dragon... You can relax at the rest house or on the lakeside benches, so it's a great spot to soak up negative ions✩.*˚ - - ... ◇Hotels Several in Shiga Kogen (can also be reached from Yudanaka Shibu Onsenkyo) - - ...