Though it's difficult to parse at a distance and while on the move in the dark, there are distantly recognizable shapes among the more archaic rune forms which do suggest fire and heat. That said, while dominant features of the etchings, it's impossible to tell whether the arcane element is a product of the valves or used in their activation. Futher, the damage from the crack is extensive enough to cause problems, though the extent—whether the seals have simply been rendered nonfunctional or id their reaction has merely been made unpredictable—remains a mystery.