Course and exit checklist for Valley of 
Bowser.
On this page
Route
Courses in this region: 
Sunken Ghost Ship, 
Valley of Bowser 1, 
Valley of Bowser 2, 
Valley Ghost House, 
Valley of Bowser 3, 
Valley of Bowser 4, 
Valley Fortress, #
7 Larry's Castle. See the ordinary destination and alternate routes for how these connect.
Alternate routes
Valley of Bowser 2: After the midpoint and moving ceiling maze, stay on the ledge by the first 
Mega Mole. Use the rising sand as a step to jump left above the ceiling, then walk left and drop to the key and keyhole.
Valley Ghost House: Use the first P-switch to reach the last door. In the next room, guide the coin trail up and right, then activate the carried P-switch to make stairs to the key.
Valley of Bowser 4: Bring Yoshi to the end. Use his tongue to pull the key through the wall and place it in the nearby keyhole.
Course notes
Sunken Ghost Ship: Swim through the ship past Eeries and Boos, then descend through the open shaft to the 
magic ball. The clear reveals the Valley of Bowser.
Valley of Bowser 1: Ride or avoid the Mega Moles and watch Chargin' Chucks in the cave. Use the midpoint before navigating the remaining passages.
Valley of Bowser 2: Wait for openings in the rising and falling ceiling maze. Follow the pipes to the regular goal; the upper ceiling route after the maze hides the key.
Valley Ghost House: Use the first P-switch to open the doors. For the ordinary goal, follow the door route through the house; keep the second switch for the alternate staircase.
Valley of Bowser 3: Cross the moving platforms over the abyss, watching Paratroopas and Banzai Bills. Take the midpoint before the last jumps.
Valley of Bowser 4: Bring Yoshi through the course and avoid Diggin' Chucks and lava. The ordinary gate leads to Larry; Yoshi can retrieve the hidden key near the end.
Valley Fortress: Wait for the falling spikes to rise, then cross the lava hazards. Defeat the Reznors to unlock Bowser's 
Back Door.
#7 Larry's Castle: Ride the 
snake platform past fire and swinging hazards. Against Larry, jump on him to push him off the tilting platform while avoiding the fireballs.
Checklist
Sunken Ghost Ship — one exit
Valley of Bowser 1 — one exit
Valley of Bowser 2 — normal and secret
Valley Ghost House — normal and secret
Valley of Bowser 3 — one exit
Valley of Bowser 4 — normal and secret
Valley Fortress — one exit
#7 Larry's Castle — one exit