Diglett's Cave

Diglett's Cave, Kanto and the Sevii Islands (from Pokemon FireRed).

Levels are this area's own. In your first region they stay as shown; in a region you open later they are raised to match your progress, unless you started that region fresh. See levels.

Wild Pokemon

Grass and caves
Pokemon	Levels	Chance
Diglett	15 to 22	95%
Dugtrio	29 to 31	5%