Era: 600 A.D., 1000 A.D.
Music: A Shot of Crisis, Battle, Secret of the Forest
Sealed Chest Items: Power Ring, Speed Tab
Items: 2 Power Tabs, 1 Shelter
Enemies: Avian Chaos, Beetle, Blue Eaglet, Green Imp, Hetake, Roly, Roly Rider
Guardia Forest is a sylvan glade that separates the hill of Guardia Castle from the rest of Zenan; visitors to the castle must navigate a winding path through sprawling greenery to reach their destination. It is teeming with animals, birds, and insects, and a Sealed Chest from Zeal also sat in one of its bowers for some time. A Gate was also found when Crono, Lucca, and Marle escaped from the castle after Crono's trial. It is unknown whether the forest survived the Fall of Guardia; considering the castle itself was burning, chances are slim.
Frog's recollections of joining Cyrus in the battle with the Frog King take place in the Guardia Forest map, though it is unknown if the forest was intended to be recognized as the actual battleground.