How to preserve it?

The bodies were covered in ash and as they degraded they left body shaped holes. So the first people to investigate the sites pour plaster of paris into the holes and when it hardened, they chipped around the plaster and had complete replicas of the body of the person or people who had died there. They have kept the bones intact of the bodies that they have discovered. They also have preserved the scrolls that they have found that were burned. At the present time, we cannot open these scrolls without damaging them but we are preserving them in the hope that some day we will find a way to open them and be able to read them. The other arefacts like mosaics and jugs and stuff like that are are uncovered and cleaned professionally and are being left at the sites.