Explore hiking trails around Dusun Kerajan II Desa Alasbulu, Jawa Timur. The best hike near Dusun Kerajan II Desa Alasbulu is Blue Fire viewpoint via Track to Kawah Ijen crater, a 5.0 mile out and back trail in Cagar Alam Kawah Ijen Merapi Ungup-Ungup.