Portal of Doom

The Portal of Doom is a deadly portal that appeared in Hyrule during Link's child years in Ocarina of Time. These events occurred in the book Link and the Portal of Doom.

The portal appeared in a wall near Kakariko Village. Link discovered it, and that Cuccos were being sucked into its vortex, and had to stop it. He found a map next to the portal, which revealed that he had to learn parts of an ancient song from various locations across Hyrule to seal the portal.

Navi believed that the portal led to an alternate dimension, and Link hypothesized that it must be an unpleasant dimension, judging by the chill he felt when he almost got sucked in.

The portal was eventually sealed by Link, after he had learned the song.