Here's how to find it:
1. Enter the Caves of Forgotten Time: This area is accessed through the large cave opening near the central area of the game.
2. Navigate the Caves: You'll need to solve puzzles and fight enemies as you make your way through the cave system.
3. Reach the "Hidden Chambers" area: This is located deeper within the caves.
4. Find the Strong Axe: The Strong Axe is found in a chest within the "Hidden Chambers."
Important Notes:
* You'll likely need to be relatively far into the game and have some decent equipment before you can access the "Hidden Chambers" and defeat the enemies guarding the Strong Axe.
* The Strong Axe is a very powerful weapon in the game, so it's worth the effort to acquire it.
Good luck!