Boulder Canyon

Boulder Canyon is an area in the Dragon Forest area of Timber Island in the games Diddy Kong Racing and its remake, Diddy Kong Racing DS. Twenty Golden Balloons are needed to unlock it, but thirty balloons are required to unlock its Silver Coin challenge.

During the race on this track, racers must use their hovercraft to ride over the running water. There are some moving logs floating atop the water to knock players around, and hitting into them could bring a player into last place, so they should be avoided at all costs. There is also a bridge farther into the stage, and it can rise if a racer is to hit the bell at the end of it. The track is also notorious for its fork in the road, which is made up of two passages in a dark sewer. The two roads are not any different from each other, though, and they both lead to the same place. In the Nintendo DS remake, this fork in the road does not have colored walls for differentiation.

Boulder Canyon contains the key to unlock Dragon Forest's battle stage, Smokey Castle. It can be reached if the player raises the bridge and rides over it. With some help from a blue Item Balloon, which is needed to get a speed boost, the player should be able to use the bridge as a ramp to grab the key in a hidden alcove.