In the console Type ents to find the base you are working on. Then type: replaceblocks <entityid> alienthin AlienThinLarge replaceblocks <entityid> alienfull AlienFullLarge replaceblocks <entityid> alienExtended2 AlienExtendedlarge2 replaceblocks <entityid> alienExtended3 AlienExtendedlarge3 replaceblocks <entityid> alienExtended4 AlienExtendedlarge4 replaceblocks <entityid> alienExtended5 AlienExtendedlarge5 replaceblocks <entityid> alienExtended6 AlienExtendedlarge6 It is important to do all replacements because you might Have a different type bloc behind a player block, and you might not think it worked. This is to remover the heat and radiation from a reclaimed POI. This is helpful to prevent radiation poisoning, and to stop killing plants on grow plots.