Koiwai Farm is situated at the foot of Mt. Iwate. The farm and its environs was one of Miyazawa Kenji's favorite places; he visited it often and loved to walk through the fields there.
"Koiwai Farm," contained in Kenji's poetry collection Spring and Ashura, is one of his most famous poems. Kenji would stroll through the farm, past Ubayashiki village, until he reached Mt. Kurakake.
The places he discovered on his strolls became the settings for numerous poems and stories.
Ubayashiki village is thought to be the model for " Wolf Forest, Colander Forest, Thief Forest" a story about some farmers who build a village.
Even today the atmosphere of Ubayashiki is suggestive of villagers living in harmony with the forests and animals around them.