Pitfall Valley (Japanese: ならくの たに Hell Valley) is a dungeon in Pokémon Mystery Dungeon: Red Rescue Team and Blue Rescue Team and contains 25 floors.
Unlocking Pitfall Valley
Plot and/or ending details may follow.
To unlock Pitfall Valley, the player must have the HM Surf, which can be obtained at Solar Cave using a key. The second requirement is that the player must have the Friend Area "Southern Island", which is bought from Wigglytuff Club for 9,500 Poke. Finally, the player must defeat Latios, the boss of Northern Range. After defeating him, Latios will send the player to Pitfall Valley to rescue Latias. Latias does not attack the player and both will join your team after this dungeon has been completed for the first time.