A few weeks ago an ArkFam Admin came online and noticed that I had built a metal structure on a mountain in the island server (Screenshots Below). The mountain restricted building feature was disabled on the server due to a patch error. There are no rules regarding building on mountains due to the expectation that this feature would be active. The admin said that my structure was going to be wiped but he could reimburse some of the materials.
Summary of materials: 74 metal ceilings 12 metal foundations 24 metal ramps 100 metal pillars (low estimate)