An Underground Odyssey

"An Underground Odyssey" or "Secret of the Underground Canyon" (地下渓谷の秘密)is the 62nd episode of Sonic X

Plot
The show opens with a sequence inside Cosmo's ship and ends when Scarship (see previous episode) destroys it, leaving Cosmo alone. Then, we find out the Blue Typhoon's crew is on a new planet. It seems that there's a Chaos Emerald nearby. Tails, Knuckles and Cosmo follow the emerald's track to an abandoned city. Knuckles discovers a deep gorge. Lower, there's a cave. Tails and Cosmo enter, but Cosmo accidentally pushes a button which launches an avalanche and seals them inside the cave. Tails still receives the emerald's signal and he and Cosmo pursue their searches. Inside the cave, Tails and Cosmo discover a big factory full of Metarex. They enter unnoticed and they find the Chaos Emerald inside a manufacturing plant of fake emeralds. They are found out by the Metarex, but they are able to escape with the White Chaos Emerald.