Location from pokemon-adventures-yellow by
An unmapped volcanic island west of Cinnabar — the Elite Four's headquarters, built into a gigantic Badge Energy Amplifier designed to summon Lugia and destroy humanity.
Cerise Island is the arc's final arena. Lance converted the entire island into a Badge Energy Amplifier — the same technology Team Rocket used, but scaled to apocalyptic proportions. Seven Gym Badges are positioned around rock spires in a precise configuration, with the Earth Badge centered over the volcano. When all eight badges are in place, the amplifier summons Lugia and channels its power into a weapon capable of eliminating humanity. The island's interior is a labyrinth of caves and tunnels where the Cerise Island battles take place. Sabrina's Spoons of Destiny divide the heroes into four teams, each sent down a different path to face an Elite Four member: Yellow and Blaine vs. Lance, Blue and Koga vs. Agatha, Green and Sabrina vs. Lorelei, Bill and Lt. Surge vs. Bruno. The final battle happens at the summit. Yellow faces Lance above the volcano, Lugia circling overhead, the amplifier at full power. When Megavolt strikes, the island's destructive energy converts to restorative energy and spreads across Kanto, healing damaged land and rejuvenating ecosystems. Cerise Island is simultaneously a weapon of mass destruction and, after Yellow's victory, the source of Kanto's renewal.
A foreboding volcanic island that appears on no maps. Rock spires ring the perimeter with Gym Badges mounted on them. A dormant volcano sits at the center, with the Earth Badge positioned over it. The entire island hums with energy when the amplifier activates.
Also known as: Cerise Island