Roo's Tubes (ホネホネ かいていトンネル lit. Undersea Tunnel of Bones in Japanese) is a racetrack featured on Crash Team Racing, and it is one of the first available to race on in the adventure mode. It is in the Green (as are Coco Park, Polar Pass and Cortex Castle) and Purple (as are Papu's Pyramid, Dragon Mines and Hot Air Skyway) Gem Cups. It is located on N. Sanity Beach and is the smallest race course in the game. It is the second race course in the game and Ripper Roo's home race track, where he in turn is faced in the first boss challenge.