Yamanaka Hachimangu Shrine in Okazaki City, Aichi Prefecture, is a historic shrine founded during the reign of Emperor Monmu (696-707). The enshrined deity is Hachiman Daijin. The shrine is known for its close association with Tokugawa Ieyasu.

Dendengassari performed at Yamanaka Hachimangu Shrine on January 13 every year is a traditional rice planting ritual handed down since the Muromachi period (1336-1573). Praying for an abundant harvest of the year, a man disguised in a cow carries the piled two pieces of rice cake, each of which is about 70 cm in diameter and 10 cm in thickness, on his back and walks around a big drum on four limbs at the shouting sign of “Deeen! Deeen! Gassariya!” After going around the drum, he falls over to the floor, which represents that the rice cake is so heavy that even a cow falls down.