Here are some specific locations where you can find rocks:
* Route 111: This is the most common location to find rocks. You can find them scattered along the route, especially near the entrance to the Safari Zone.
* Route 123: There's a large rock formation near the start of the route, but you can't break it for rocks.
* Route 127: There is a small rock formation in the grass near the eastern edge of the route.
* Route 128: You can find rocks near the water at the northern end of the route.
Note: These are just a few examples, and you may find rocks in other locations as well.
What can you do with rocks?
Rocks in FireRed are mainly used for breaking them. You can break rocks with certain Pokémon that have the Rock Smash move, which you can learn from Strength (obtained in the Rock Tunnel). Breaking rocks can reveal hidden items, rare Pokémon, or access to new areas.