. . "The Tectonic Anvil will permanently tie up 5 Geothermal resources, and requires a Canyon within 2 tiles of the city. The canyon production bonus only applies to the city in which it is built."@en . "The Tectonic Anvil will permanently tie up 5 Geothermal resources, and requires a Canyon within 2 tiles of the city. The canyon production bonus only applies to the city in which it is built."@en . "Tectonic Anvil (CivBE)"@en .