Subterranean Lake

The Subterranean Lake is one of the many caves the player will encounter in Pikmin: Connection of the Worlds. It is located in the middle of the vast Distant Desert, at one of the oases. In fact, that oasis is the source of the titular subterranean lake. The further down the player goes, more water is found, so it is essential that the player brings Blue Pikmin with them into this cave, although the first two sublevels start out as hot and sandy. Oddly enough, the boss of this cave holds the Scorch Guard, the opposite of water. It's not a very difficult cave, but not easy, either, as some tougher enemies are introduced...

Accessing the Subterranean Lake
As implied above, the Subterranean Lake is located in the middle of the Distant Desert. You will need to be prepared to cross half of the desert. Tan Pikmin are necessary to reach the cave, as some quicksand blocks the entrance to the cave. As the Onions will fly to whatever oasis the player is at, the player can bring out the Blue Pikmin and other necessary Pikmin to go down with them into the Subterranean Lake.

Sublevel 1
A more complex cavern, you might be surprised you land in a simple, circular chamber. However, a tunnel leads out, but don't go too far, as there is a cliff. At the base of this cliff, the tunnel continues, but don't even think of trying to walk over the edge as it will result in failure. Instead, look for a hidden passageway- on the left wall, there is a boulder that blocks the way of a hidden tunnel. Push this out of the way and a new tunnel will be revealed, one that leads to the base. Follow the tunnel out of the cliff, then enter the next one. At the end of that one is a maze; most of the ground here is quicksand so it's essential you utilize the Tan Pikmin here. Some treasures are in some alcoves, while the cave is at the end of the maze. Go down to the next level...

Sublevel 2
Landing in this level, you probably see fire geysers all around. Work your way around these fire geysers, and find the passageway that leads to the next chamber. In here are some Red Bulborbs and an Armored Cannon Beetle Larva, the latter of which is hiding atop a small hill, buried, waiting to ambush you. It will yield a treasure when defeated. After collecting the treasure, find the other tunnel in the second chamber to lead to a third chamber. It is a wide, flat plain with several quicksand patches as well as numerous fire geysers. As hard as this already is, more Armored Cannon Beetle Larvae are hiding in some of the quicksand patches. Carefully traverse your way through this plain and find the hole at the end to continue down.

Wildlife

 * Armored Cannon Beetle Larva
 * Red Bulborb
 * Boss: Giga Watery Blowhog