Willow (NES)/Rock mountain

Rugged forest, west
Go straight west from the beginning, and enter a small cave. Inside, a shield can be found.

As soon as the possessed Bogarda is defeated, the spell on the bridge will be lifted, and Willow (and Kchil) can pass.

Death forest
You might think that the name "Dead Forest" was more appropriate, but the enchanted tree stumps justify the name.

Rock Mountain cave
Entrance to the north of Death forest.