Cave

Rock Tunnel

A pitch-dark cave between Route 9/10 and Lavender Town. You need HM05 Flash and the Boulder Badge to see anything.

Encounters

Entity	Types	Method	Levels	Rate	Time
Zubat	Flying Poison	Cave	15–22	50%	any
Machop	Fighting	Cave	17–21	20%	any
Geodude	Ground Rock	Cave	16–21	40%	any
Onix	Ground Rock	Cave	14–22	10%	any