According to the Nihonshoki (Chronicles of Japan), Arima-Onsen Hot Spring that is said to have existed since the age of the gods, was discovered when Onamuchi no mikoto and Sukunahikona no Mikoto saw that three injured birds were cured after those birds went into the water.
神代よりあるという有馬温泉は、日本書紀に大巳貴命と少彦名命が傷ついた3鳥が水に浸かり傷が治る姿をみて温泉を発見したとある。