Mystic Mountains

The  are a location in and a mountain chain in Prehistory (65,000,000 B.C.). The first Gate into this time period is located here. To enter the Gate, Crono scales the mountain and jumps down the canyon into it. Kilwalas and Leapers inhabit this location. One Berserker Ring is found in a chest along the cliff.

Story
Seeking the rare and precious Dreamstone to repair the Masamune, Crono and the others travel millions of years into the past, the last known time period containing the stone. When the party first arrives through the Pillar of Light at the End of Time, they are ambushed by Reptites. Fighting off a few, they are quickly overpowered. A strange woman running on all fours arrives at the scene and defeats the hoard. After which, Ayla, the strange woman, congratulates the party on their strength, especially Crono, with whom she seems quite fond.

Shortly after, Ayla invites the party to Ioka Village for a feast. From this point on, the party is able to use the Gate by jumping off a cliff near the mountain's summit.

Trivia

 * Kino is said to have been found here as a baby.
 * Interestingly, this scene is where Ayla alludes to her bisexuality, saying she appreciates strength in both men and woman. In Japanese versions of Chrono Trigger, this scene also includes Ayla belittling Marle for the size of her breasts and how that would make her a poor mother. This was edited out of North American versions of the game due to Nintendo Censorship policies.