The Scorched Abyss (Not on the current agenda)

Inside the erupting volcano, the magma flowing around the twins in abrupt motions; the sweltering heat really taking a toll on there energy, how are they going to make their way out? the branching labyrinth of pathways in the volcano its'elf is nearly too much for the twins to handle. The Eternity stone is surely near; but every time they make their way closer to it, magma blocks the ancient stone with a burst of energy and heat. How will they obtain the sacred stone now?
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Cut-scene:
When the twins reach the Stone, a forest feeder grasps it before they could confront the beast. without hesitation, they charge at the creature; forcing it and the Stone into the lava. Unified with both the lava and feeder, the creature transformed into a beast so massive in raw power... The twins already know that no ordinary attack will harm the beast. They will be forced to pit their minds to the test in order to defeat the beast.
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Themes
Trope used: Volcanic/Mountainous
Mood of stage: Serious/Darkening
Gimmicks used: N/A
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Boss
Name: -No name has been given at the moment-
Special attributes: Made of molten rock. (No ordinary attack can hurt it)
Weak Points: Unknown.