Toxic Tunnels

Toxic Tunnels (どくヘドロ トンネル lit. TBA in Japanese) is the second story level of Cortex Island (1996) and the thirty-second main level of Crash Bandicoot 4: It's About Time.

Overview
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Trivia

 * This level has similarities with Spaced Out from Crash 2 and Bug Lite form Crash 3:
 * They all have multi-color gem routes, which for all colored gems of the game are needed.
 * All of them have a clear gem at the end of a multi-color gem route.
 * But unlike Space Out and Bug Lite, which are the last levels of their respective games, Toxic Tunnels is not the last level of Crash 4.