Lava is a hazard present throughout the series.
Lava first appears in Glitter Gulch Mine in the boss fight against Old King Coal. Initially, the lava on the floor is cool and safe to walk on, but after Coal takes enough damage for his left arm to break off, he turns up the heat in the boiler room, making the lava deadly for the duo, who must continue the fight while standing on the metal platforms; if they touch the lava, they take damage, knocking them up into the air.
Lava is a hazard in the track Steamy Vents. It will occasionally pop, and racers must be careful to not fly too close to the lava. A large winged dragon who appears unique from Chilli Billi sits in the lava, appearing as a background element.