Hidaka Mountains is a mountain range in southeastern Hokkaid , Japan. It runs 150 km from Mount Sahoro or Karikachi Pass in central Hokkaid south, running into the sea at Cape Erimo. It consists of folded mountains that range from 1500 to 2000 metres in height. Mount Poroshiri is the highest at 2052m. The Hidaka Mountains separate the subprefectures of Hidaka and Tokachi. Most of the range lies in the Hidaka Sanmyaku-Erimo Quasi-National Park. Since the mountain range lies so far north, the alpine climate zone lies at a lower altitude.