Large icicles are formed when the river water that flows into the Kuzumaru River freezes on the mountainside. It is said that local people have used the thickness of these icicles to predict the year's harvest, and measurements are taken every February 11th.
- Venue
- 028-3185 Osegawa grounds, Ishidoridani-cho, Hanamaki-shi, Iwate (upstream of Kuzumaru River)
- Hours
- [Measurement date] February 11th every year 10:00-11:00
- Inquiries
- Hanamaki City Ishidoriya General Branch Industry Division
Phone number 0198-45-6472
