The Serpent's Jaws

The Serpent's Jaws is a Shrine Quest in.

Overview
Link encounters Kass in the Pagos Woods. Kass will sing Link a song leading him to the Spring of Courage in the Zonai Ruins. If Link places a Scale of Farosh in the Spring, a secret passage to Shae Katha Shrine will appear.

Trivia

 * Part of this Shrine Quest was shown before the game's release in a promotional video.