The Remains of Vulcan
At the center of the labyrinth in the outer rim of the Water Nation temple borders are the remains of the once-ruler of the Earth Nation: Vulcan. During the last great war between the two Nations, it was Vulcan's every intent to land the final blow to the heart of the Water Nation. He was aided by a mage and dragon slayer named Roxell to turn the final ball of fire into a war-ending strike.
With the efforts of Naga, such calamity was avoided. The misfire lead to the molten pit that now rests between the labyrinth and the temple entrance that now warms the waters. By a turn of events, it allows life to thrive more readily.
The result of the final strike, unknown to Vulcan, was exhaustion that sent the heavy dragon of earth and flame plummeting to the bottom of the ocean trench where he would never recover to the surface. The dragon's shrine serves as a warning symbol to those who draw closer to the temple, as well as a reminder of the past hardship.
“Through calamity, our waters have thrived. We have come to live upon new growth due to Vulcan’s actions and the actions taken by my mother to preserve us… calamity brings forth change of all kinds." - Yuna