From the Super Mario Wiki
DK Pass is a snowy course in Mario Kart DS that takes the player over a mountain and back down. Numerous snowballs roll around, and crashing into them will result in being thrown backwards and losing whatever item a racer may be carrying. Snowmen also appear all over the course, and are very similar to the snowmen found in Frappe Snowland in Mario Kart 64. Collision with the snowmen has the same effect as collision with the snowballs.
There is an isolated Item Box up on a snowy cliff at the peak of the hill, after the second set of normal item boxes. The player will need a Mushroom or two to get through the snow to the item box, but in it contains one of these items: Star, Mushroom, Triple Mushrooms and Red Shell. Any of them can be received in any position, including in Wi-Fi play. However, there is a glitch: right after the player reaches the finish line on the third lap, and runs into the wall, the player will see a black pit. This only works in the DS version.
Mario Kart DS
There are two missions involving this circuit: 4-1 and 5-7. In mission 4-1 the player must reach the finish line in the opposite direction before DK and in mission 5-7 they must go through the eight gates in order.
The staff ghost in this track is 2:14:607 using DK in the Wildlife.
Mario Kart 7
This track returns as the second track in the Leaf Cup in Mario Kart 7. All the trees in the off-road sections have been removed and some wooden ramps have been placed in the off-road area of this track, allowing players to perform a trick and gain a boost. After turn eleven, the boost pad in the large jump is replaced with a gliding pad, allowing racers to reach some coins. The secret item box on the hill now holds a Mushroom, Triple Mushroom and a Star and the trees on the hill are no longer there. A new feature in the track is that a fog appears in the first and second lap, but clears up on the third lap. At the flight pad, there is a glitch: if the player goes to the right or left of the pad, spins about 90 degrees in the opposite direction (if on right, turn left, and vise versa), and goes in the pad, the player will take off and go into an area that will cause a coin loss.
Mario Kart DS sites
Names in other languages