Kabudrahang or Kabudarahang (Also knwon as Kabutar-Ahang) lies in the vast plains north of the province. It has a cold mountainous climate. The city of Kabudrahang is the center of this township which lies 62 km. from Hamadan. Kabudrahang was a part of Hamadan township, but today it is a separate township.
The Alisadr cave (Ali-Sadr) the world's largest water cave, and a unique natural phenomenon which is located 75km to the northeast of the city of Hamedan, lies in the Subashi Mountains of Kaboudar-Ahang. The 70-million-year-old cave which was first discovered by Iranian mountaineers in 1963, is visited by some 80,000 tourists annually.