Little Hole

the first cave in Pikmin extinction and it only has 2 floors.

layout
this is one of the few caves that aren't randomly generated

floor 1

2 Dwarf Red Bulborbs at the start, and 2 Fuzzy Bulborbs in a small room with the exit at the end.

floor 2 - final floor!

it has 2 Iuer Bulborbs, and a Dwarf Red Bulborb in another small room. The exit is in the next room, which has 5 Iuer Bulborbs and a Pikmin gem