Yansanma Festival is a big Spring festival that takes place at the Shimomurakamo Shrine in Imizu City, Toyama Prefecture. The festival lasts over 4 hours, starting with Soume-no-gi (Horse Riding), and followed by other ceremonies including Shinkou-shiki, Gyujyou-shiki (cow riding), shishi lion dance and yabusame (horseback archery).
Throughout the festival horses and cows play important roles.  The Cow Riding ceremony is rare religious ritual that can be seen only at this festival.
In the Horse Riding ceremony, some riders run through the area on horses and the best horse is chosen and dedicated to the gods to pray for a rich harvest.
In the Cow Riding ceremony, a young man, wearing a red mask with a big nose, appears riding on a cow. He then shoots an arrow made with fresh bamboo towards the roof of the shrine.  This is done to pray for peace and a rich harvest in the region. The cow is regarded as an incarnation of the god of farming and it is believed to possess the power to protect people from fires and epidemics.  Participants in the ceremony, wishing to make the cow stay in the region, struggle to control the cow and make it kneel down on the ground.
The festival ends with the Horseback Archery ceremony in which a warrior, riding on a horse, shoots an arrow along the shrine’s path.
The Yansanma Festival is designated as an Intangible Folklore Cultural Asset by the Toyama Prefecture.