Udo Shrine is a rare shrine with a vermilion-painted main shrine located inside a cave facing the Hyuga Sea.

Udo Shrine has been a sacred place for marine worship since ancient times, and is worshiped as the god of matchmaking, marital harmony, safe childbirth, fishing, and navigation.

The vermilion-painted main shrine is located in a cave facing the Hyuga Sea, and the combination of its divinity and the blue of the sea creates a beautiful landscape.

Undama toss is a ritual in which balls are thrown toward the main shrine at a ball toss field set up inside a cave. It is said that if the ball hits the main shrine, your wish will come true.