Scaldera

Pyroclastic Fiend, Scaldera is the boss of the Earth Temple in The Legend of Zelda: Skyward Sword. Ghirahim summons Scaldera, whom Link must then fight. Scaldera is a large boulder-esque creature with many legs that attempts to chase Link up a steadily inclining ramp. To defeat Scaldera, Link must throw Bombs into its mouth to chip away at its exoskeleton, revealing an eye beneath; Link must then slash the eye with his sword, but it can dodge his attacks as well as position itself in specific ways that require Link to slash in different directions.

Etymology
The name Scaldera is likely a portmanteau of "scald", which is a burn caused by liquid or steam, and "caldera", a cauldron-like volcanic feature usually formed by the collapse of land following a volcanic eruption.