It may be too cold for Ms. U N in Vietnam but I would like her to visit this place under the bless of deities called Kamui in the language of the indigenous people Ainu in Hokkaido Island of Japan.
Have you ever heard of the mysterious lake Akan in Hokkaido ? Green balls floating up and sinking down in the lake can be seen from the kayak on the lake. The green balls are called Marimo in Japanese and in English, Cladophora ball, Lake ball, Moss BallI think.
Muddy hot spring is near the lake. It is called "Bokke" in the language of the indigenous people in Hokkaido Ainu. A variety of flowers can be seen near the lake in each season as shown on the sign. But it was not the season of the flowers.