Below-Grade Discotheque

The Below-Grade Discotheque is a cave in, located in the Serene Shores. It is a metal-themed cave with dark lighting, so the Headlamp upgrade is recommended. Various electronic objects are found in its sublevels. Its name alludes to the boss within the final sublevel: the Groovy Long Legs. This cave has worth of treasure.

How to reach
The Below-Grade Discotheque is located near The Sand Keep base, at the top of the sandcastle. Southeast of this base there is a branching path; while one path goes up towards a small pool, the other path heads down to this cave's entrance.

Sublevel 1

 * Treasures:
 * (inside the dirt-mound)
 * Enemies:
 * &times; 2
 * &times; 3
 * Obstacles:
 * &times; 1 (requires 15 pieces of raw material)
 * Tools:
 * &times; 1 (contains the Sphere of Vitality)
 * Wild Pikmin:
 * &times; 5 (sprouts)
 * Others:
 * &times; 1 (15 pieces)
 * Others:
 * &times; 1 (15 pieces)

The first sublevel is fairly small. Make your way around it, defeating the Tusked Blowhogs, building the clay mound, and collecting the treasures and raw material.

Sublevel 2

 * Treasures:
 * Enemies:
 * &times; 2
 * &times; 1
 * &times; 2
 * Obstacles:
 * &times; 1
 * &times; 3
 * &times; 4 (lowered by pressing the button)
 * Tools:
 * &times; 2
 * &times; 1
 * Wild Pikmin:
 * &times; 5 (fighting a Bearded Amprat)
 * Others:
 * &times; 1 (15 pieces)
 * Others:
 * &times; 1 (15 pieces)

This sublevel is themed around riding floating platforms. To collect the Olfactory Sculpture, jump to the floating platform in the west with Oatchi and throw 10 Pikmin over to the treasure, being careful to not throw them off the edge or at its hazardous flame. To collect the Soul Reverberator, walk past the iron fences without Oatchi, carefully walk onto the floating platform, and throw a Pikmin at the white button, which will lower the iron fences. Make sure to defeat the Shearfleas and Bearded Amprats, and destroy the fire geysers.

Sublevel 3

 * Treasures:
 * &times; 10
 * Enemies:
 * None
 * Obstacles:
 * &times; 1
 * &times; 1
 * Tools:
 * &times; 6
 * &times; 5
 * &times; 3
 * &times; 1
 * &times; 1 (blue and red, switches the direction of the moving walkways)
 * Wild Pikmin:
 * None
 * Others:
 * (Winged) &times; 1
 * (Winged) &times; 1

This sublevel has a complex layout featuring many moving walkways, Bouncy Mushrooms, and fans, but the things that need to be done to complete it are actually fairly simple. To start, head to the lower level and jump onto the fan on the ground to reach a higher level. Dig up the tunnel and enter it to reach another island where the 15 Gold Nuggets can be collected. Returning to the previous level, make sure that the blue button is pressed down, then throw Pikmin onto the Bouncy Mushroom that the arrows on the ground are pointing towards. They will land on a moving walkway and begin going around a circuit. The next step requires timing: when at least 10 Pikmin are on the leftmost of the three moving walkways, press the red button to switch their direction. They will land on a Bouncy Mushroom and slide down a rail to push a cardboard box off a ledge. You can then cross this box and collect the Turn-of-Events Track. To access the Winged Candypop Bud, jump from the box to the Bouncy Mushroom next to it, which will lead to a fan that will take you to the high platform with the Candypop Bud. To access the hole to the next sublevel, jump on the fan next to the treasure's location, which will take you to another platform with the hole.

Sublevel 4

 * Treasures:
 * &times; 15
 * (inside the Tusked Blowhog)
 * (partially buried)
 * Enemies:
 * &times; 2
 * &times; 2
 * &times; 2
 * &times; 1
 * Obstacles:
 * &times; 3
 * &times; 1 (inside sizzling floor, requires 16 pieces of raw material)
 * (high) &times; 1 (requires 10 Yellow Pikmin or Winged Pikmin)
 * &times; 1
 * &times; 2 (lowered by pressing the button)
 * &times; 2 (one extinguished by defeating the Pyroclasmic Slooches, one extinguished by activating the sprinkler)
 * &times; 1 (extinguishes the sizzling floor it's on when activated, and then automatically deactivates)
 * Tools:
 * &times; 1 (lowers iron fences)
 * &times; 1 (plugged)
 * &times; 1
 * Wild Pikmin:
 * &times; 5 (fighting the Pyroclasmic Slooches)
 * Others:
 * (Winged) &times; 1
 * (Red) &times; 1 (if player has 5 or fewer Red Pikmin)
 * (Yellow) &times; 1 (if player has 5 or fewer Yellow Pikmin)

This sublevel is themed around sizzling floors. To start, destroy the dirt wall and defeat the Tusked Blowhog to collect the Relentless Spear. Attack the nearby geyser to gain access to a high platform with a Winged Candypop Bud. Then head down to the area with the sizzling floors, leaving your Yellow Pikmin and Winged Pikmin behind. Defeat the Pyroclasmic Slooches and Fiery Blowhogs, and build the clay valve. Collecting the Gold Nuggets at the same time can increase the efficiency of this step. Once the valve is built, rotating it will activate a sprinkler that will extinguish the sizzling floor, and then the sprinkler will automatically deactivate itself. This allows the items around the sizzling floor to be collected, since items cannot be carried over a lit sizzling floor. Finally, send Oatchi into the pup tunnel, throw 10 Yellow Pikmin up the ledge, switch to Oatchi to throw those Pikmin at the clipboard, and press the white button, which will lower the iron fences. To reach the hole to the next sublevel, return to the S.S. Beagle and walk across the narrow metal bridge with Oatchi, jumping over the gap in the middle.

Sublevel 5

 * Treasures:
 * (inside the Groovy Long Legs)
 * Enemies:
 * &times; 1
 * Obstacles:
 * &times; 1 (lowers when 1 Groovy Long Legs is defeated)
 * Tools:
 * None
 * Wild Pikmin:
 * None
 * Others:
 * &times; 1
 * &times; 2

This sublevel contains the boss of the cave: the Groovy Long Legs. After defeating it, carry back the treasure it drops and the castaway behind the numbered gate.