The Core from Undertale. After a big explosion inside the core due to overheating machinary many years ago, the area was mostly rebuild into a museum. But something eerie remained, and some say you can spot the restless spirits of the former staff roaming the halls late at night. The whole Undertale Cast and more Undertale Buildings are available on my Account. This lot is best placed in Windenburg. #Undertale #Hotland #Core #Museum #Haunted #Windenburg