The Lava Towers of the Zorods

Zorod Koldo im Neuna and Zorod Naugi im Pkhaur both contain so-called lava towers (both cities have 12 towers each), which prevent the eruption of volcanoes right underneath those two cities that were built straight over active volcanoes. In each of these towers, there a so-called "ice crystal", which projects an invisible protective layer upon the surface of the lava. When the lava touches that boundary, it turns into stone, and falls back into the lava. A quite big problem, is that this only applies to lava - heat still goes up, and man can fall inside (potentially freezing before falling into the lava). To maintain this protective shield around a city, there needs to be 12 towers - if one malfunctions, the whole thing goes under, therefore only specialists are allowed to enter these towers.

The FRPG
On the original forum, it was declared and defined first on the 22th of May, 2010, on the phpBB2 version - but only in Zorod Koldó im Neuna. In 2020, it was ret-conned to exist in both Zorods.