The Rock Tunnel Connects Route 10 to Lavender Town. To get
through, you need to have a Pokémon that knows the HM05 Flash.
There is also a Move Teacher who will offer to teach Rock Slide to
one of your Pokémon on the second floor.
If you picked Squirtle or Bulbasaur as your starter and leveled
it up decently, you'll have little problem getting through. Those
who picked Charmander as their starter will struggle though, as the
rock types here are super effective against fire types. Pick up as
many super potions as you can in Vermillion City, as you'll be
using them. Worry about getting to the other side and come back for
the items/Pokemon later once you have a stronger team.
On the second level, in southwest corner, there is a guy who
will teach your Pokémon Rock
As the second Fighting type Pokemon you can catch in the game
Machop is a great replacement for a Mankey if you caught one
earlier. He gets tons of fighting type moves and evolves twice,
first into Machoke at level 28, and then to Machamp after being
traded. The only thing working against him is that once you gain
access to Saffron City, you'll probably replace him with Hitmonlee
Onix is the second Rock type pokemon you encounter in the game
following the Geodudes you run into inside Mt. Moon. Although not
as well rounded as a fully evolved Golem, Onix's Defense stat is
unmatched. In addition, he receives Dragon Breath at level 30 and a
Steel type move, Iron Tail, at level 45, which makes him a
contender for use against Lance's Dragons in the Elite Four.
- Max Ether (North of Picnicker Sofia and Hiker Dudley)
- Revive (B1F; southwest corner)
- Escape Rope (Southeast of Hiker Lucas)
- Pearl (North of Picnicker Dana)
- Repel (1F; northeast corner)