Super Mario 64/Cavern of the Metal Cap

Location: In level 6. Go to the underground lake, and ride the blue sea beast to the door across from where you came in. The metal cap course is in the pool inside.

Description: Long level with a strong current. Don't get sucked in to the waterfall; you'll end up outside.

Super Mario 64
Courses: Bob-omb Battlefield \| Whomp's Fortress \| Jolly Roger Bay \| Cool, Cool Mountain \| Big Boo's Haunt \| Hazy Maze Cave \| Lethal Lava Land \| Shifting Sand Land \| Dire, Dire Docks \| Snowman's Land \| Wet-Dry World \| Tall Tall Mountain \| Tiny-Huge Island \| Tick Tock Clock \| Rainbow Ride
Other courses: Bowser in the Dark World \| Bowser in the Fire Sea \| Bowser in the Sky \| Tower of the Wing Cap \| Cavern of the Metal Cap \| Vanish Cap Under the Moat \| Secret Castle Stars
Other pages: Glitches