Big Donut
From the Super Mario Wiki
Big Donut is a battle course in Mario Kart 64 that, like its name implies, is shaped like a big donut. In the hole of the donut is a pool of lava. If the player is to fall in it, they will lose a balloon and be brought out by a Lakitu. There are also four block towers located around the course that provide the only means to evade opposing racers. The course is also somewhat downhill, making it a little more rougher.
