Cerulean Trial Site

Cerulean Trial Site is an area in Cerulean City that is used for trainers to pass the trial in order to challenge the gym leader.

Part Red & Blue
Cerulean Trial Site is revealed first time in when  challenges the Gym leader to a battle. However, Tiffany tells Redwald that he has to pass the trial before the Gym leader accepts his reques. Therefore, Redwald goes to the trial site and passes the two stages of trial by using two Pokémon of his.

Trial
The trial consists of two stages. The challengers are allowed to use one Pokémon in each round. The challengers don't know what they have to face in the trial, but they know they are allowed to use a Pokémon in each stage. In the first stage, the challengers are required to swim against the stream. On their way, a Wartortle appears and attacks them. The challengers have to defeat the Pokémon by using their Pokémon. In the second stage, the challengers swim in a cave and find a particular item there. But before they take it, a Seadra appears and attacks them as well. Once the trainer defeats Seadra and takes the item outside, the Gym leader invites the challenger to their Gym saloon.

Geography
The area consists of a rough river and a cave nearby. The cave is dark inside, but they are brightened by the green gems.