Nakanosawa and Numajiri Extreme Hot SpringsA completely new hot spring area that offers a unique and superlative active experience.The surrounding landscape created by nature has a unique atmosphere, and the vast hot spring fields created in the valley are a sight to behold!Bathing in the open-air baths while appreciating nature's bounty is an overwhelmingly extraordinary experience.(Please bring your bathing suit if you wish to experience bathing in the hot spring.)