Corrupt Crevice

The second-to-last cave in Pikmin: Planetary Evolution, it is very, very unstable, and one bomb rock could bring the whole place down.

Floor 1
50x Shearwigs

Floor 2
45x Dwarf Red Bulborbs

Floor 3
15x Red Bulborbs

Floor 4
Boss: Dimensional Parasite

Treasure
A note is found, which speaks of a beast which has eaten a large, valuable treasure.