Takanoyu Onsen Takanoyu Onsen Takanoyu Onsen (♨鷹の湯温泉) is one of several hot spring resorts in the Akinomiya Hot Spring Resort area of Yuzawa, a town in southern Akita Prefecture. The onsen is nestled in a small gorge along the banks of the Yakunai River. Because of its secluded location, it is referred to as a Hitou, or hidden hot spring. Legend has it that the Akinomiya Hot Springs, the oldest in Akita Prefecture, were found 1,200 years ago. Local legend also has it that Takanoyu, or Falcon's Hot Spring, got its name when a falcon led a hunter to the spring, giving
Tamagawa Hot Spring Tamagawa Hot Spring The Tamagawa Hot Spring in Senboku, Akita Prefecture, Japan is the highest flow rate hot spring in Japan. The spring has a flow rate of 150 litres/second. It feeds a 3-meter wide stream with a temperature of 98 °C. The water from Tamagawa Hot Spring is very acidic, with a pH of about 1.1. There is radioactive radium gas and other radioactive materials dissolved in the water from the hot spring. There are deposits of the radioactive mineral hokutolite near the spring. Hokutolite is composed of a type of barite (barium sulfate), including lead and traces of