Magma Spring

The second area in Pikmin: The Mystery Potion, and is covered in boiling hot magma! It has four caves scattered in it. You find Scarlet Pikmin here, and they are immune to the magma pools.

Enemies
Fiery Bulblax - Near the landing zone, guarding the Scarlet Onion.

5 x Bumbling Snitchbugs - Found near the Bulblax.

10x Dwarf Orange Bulborbs - Behind the Bulblax.

1x Combustive Snagret

Spoliotoniumite
One is on top of a large, burnt stump. It requires yellow pikmin to collect it.

Another is inside the Combustive Snagret, which is near the entrance to the Lava Lake.