Mount Moon is a multi-level cave. You'll encounter Zubat, Geodude, Paras, and the rare Clefairy. Keep an eye out for hidden items and battle the Team Rocket grunts scattered throughout. At the end of the cave, you'll face a Super Nerd who offers you a choice between the Dome Fossil (Kabuto) and the Helix Fossil (Omanyte). Choose one, as you can only revive one later in the game. Exit Mount Moon onto Route 4 and proceed to Cerulean City.
