The colossi of Lavastorm may possibly be made from the lava rock itself. Perhaps destroying them will reveal some more information about this fiery landscape.
I need to destroy more of the colossi in Lavastorm.
I need to destroy fifteen hardened or ardent colossi in Lavastorm.
I have destroyed the colossi.
I have destroyed many colossi in Lavastorm.
After destroying several of the fiery creatures, I have found that they are indeed created from the lava rock in Lavastorm. They appear to be very resistant to heat attacks, and are very difficult to damage with swords.