Carbon Mines and Earth Temple
A rock-like (significantly more rock-like than Gorons) species. Roughly 2.5x the size of Link, They have a similar appearance to the Pokemon Golem.
They live in the depths of the mountain. They live in walls of carbon-based rocks and come out to attack the player by rolling around. Unfortunately, they're kind of stupid and don't think about where they're rolling before they do it. This typically leads to them rolling off of edges or into a lava pit. When they leave the wall, they leave behind a hole which may contain treasures or act as a doorway. They are 100% invincible to all weapons. However the wind and water cogs can slow down or even reverse their roll. The only way to rid yourself of them is to roll them into a trap, or into each other.
1.5 HP of damge. Rolls towards the player, chasing them until they're out of the "line of sight" or until something stops them. This is a slow roll (roughly 90% of the player's running speed) with wide turns. Going downhill however, their speed can reach 1.5x that of the player, but can lose control of themselves very easily.