Moonlit Grotto

Moonlit Grotto is the third dungeon in Oracle of Ages. It is located on Crescent Island, and it is similar to the Eagle's Tower in that Link must break through the floors to find new rooms. Inside, Link will encounter Subterror, a mole-like monster, and find the Seed Shooter along the way. After defeating Shadow Hag, the dungeon's boss, the third Essence of Time, Echoing Howl, will be awarded to Link.

Background
It is unknown exactly how the guardian statue that forms Moonlit Grotto was made. As the Tokay see it as a guardian, it is unlikely that they made it. However, Moonlit Grotto was not always Moonlit Grotto.

In the time of Queen Ambi, the guardian statue was a secret passageway, which allowed the bravest, the strongest and the wisest safe passage through the Sea of No Return. On the other side of the path, the Ancient Tomb lay.

However, sometime in the four hundred years that Link skipped while traveling through time, the guardian statue changed inside drastically, becoming the Moonlit Grotto. How, or why this happened, is unknown.