Stone Spa first originated in Tamagawa Hot Springs in Akita Prefecture, Japan. In 1680, local hunters discovered that injured deer were resting on warm rock plates near the hot springs. After a short while, they were able to jump and run around alive. Curiosity The hunter also went to lie down around the hot spring. Unexpectedly, in addition to the body warming and perspiring profusely, the discomfort in the body was gradually resolved and the wound improved.