Pokémon Red and Blue/Route 11

'After you pull the plug on Lt. Surge, head for Lavender Town. The quickest way is to the Route #11 and #12. Unfortunately, a Snorlax blocks Route #12, but you should go as far as the lookout station. There you'll meet up with one of Professor Oak's aides. After you've talked with him, turn around and head toward Diglett's Cave.'



A Snorlax in the way
This area is entirely optional, since you'll need to use Diglett's Cave to cross back to Route 2 (where you want to be right now) without facing the wrath of the 10 deranged trainers lurking in Route #11. But you might want to visit for a bit yourself a, and maybe take down some of the Gamblers for the massive amounts of cash they keep on hand.

The checkpoint to the East is open, but a sleeping is blocking the path. You can go upstairs, however, and get the Item Finder from one of Professor Oak's aides if you have 30 or more Pokémon, or trade for a  in Red/Blue or a  for a Dugtrio in Yellow.