Lethal Lava Land

Lethal Lava Land is the seventh course of Super Mario 64 and Super Mario 64 DS. The entrance to the course is the large painting with a menacing-looking fireball (implied by the course's Japanese name to be a Sparky) located in the Mushroom Castle's basement. The course has many platforms situated over a pool of lava with a volcano in the center of the course.

Main course
The player starts off on a platform with a couple of signs, and the player has to long-jump in order to reach the next platform. This platform splits into either a small circular platform on the right that contains a yellow block with a Shiny Shell inside during the later missions or a platform to the left that has several Sparkies jumping across it. At the end of the left path is a large platform with a single Bully. Here, the platform splits and leads to either the left or the right side of the course.

To the right are a lava plume and a ramp and platform that lead to the spinning ring platform that circles the volcano and a flamethrower with a 1-UP Mushroom on top of it at the back of the platform. If the player stands on this platform, it will slow to a halt; the volcano will erupt, spewing out several fireballs; and then the platform will resume moving. To the right are platforms that lower and rise in and out of the lava. Here, the platforms lead to either a circular platform with a duo of Bullies or an M-shaped platform. The platform with the Bullies has a steel-grated platform that brings the player to a rolling log. The M-shaped platform leads to four sinking and rising platforms with a large platform with a trio of Bullies, where a Big Bully will be fought if the player defeats the normal Bullies.

To the left of the large platform with the Bully is a drawbridge leading to a steel-grated platform with a Mr. I. and a warp underneath it. The warp leads to a small platform containing a Wing Cap. Past the Mr. I. is a platform tilting in and out of the lava with a group of slide puzzle platforms with Bowser's image. Beyond the picture of Bowser is a platform with a couple of Bullies leading to a spinning platform with a Fire-Bar, and a couple of platforms beyond that lead to a Big Bully.

Inside the volcano
Jumping into the volcano in the center of the course brings the player to the inside of the volcano. The volcano has several platforms that ring around the volcano's walls and lifts that spiral up to the top. There are several Bullies, Sparkies, Fire-Bars, and flamethrowers along with a large falling obstacle that will attempt to flatten the player if they get close. The platforms can get small near the top of the course, and there are several poles the player has to jump between as well.

If the player loses a life in the volcano and reenters the course, they will be brought back to the inside of the volcano without having to go though the main course again, provided the life lost does not result in a Game Over.

Statistics from Super Mario 64

 * Total Number of Coins: 133 (107 outside, 26 inside)
 * Caps Found: Wing Cap (1)
 * Spinning Heart: Inside the volcano, past the crushing wall, on the platform to the right.
 * Cannons: (none)
 * 1UP Mushrooms (8):
 * Homing Mushroom : #1 Inside the volcano, in the highest pole.
 * Static Mushrooms : #2 Behind the platform the "Boil the Big Bully" Star appears on. #3 & #4 Two mushrooms can be found on two high brown ramps. #5 & #6 Two others can be found on small white ramps. #7 The last static mushroom can be found on the top of the fire shooter behind the volcano.
 * Triggered Mushroom : #8 Appears after the player runs around the spinning platform with flames past the picture of Bowser.
 * Warps:
 * The area under the Mr. I. near the picture of Bowser can warp the player to the island with the Wing Cap.

Trivia

 * The spinning platform with the Fire-Bars in the northeastern section of the main course does not hold Bullies when they are pushed onto it, causing the Bullies to fall through it.
 * In the DS version, this course is one of only two courses (along with Rainbow Ride) where any character can collect any Star.
 * Additionally, Lethal Lava Land is the only course that allows Mario to obtain his Power Flower and flying abilities in the same area (this means not going into a separate part of a course, i.e., the pyramid or the igloo).
 * The name of the 100-Coin Star is Surf the Lava.