How would you react if you suddenly discovered a huge mass grave in the middle of your city? You might panic — unless you happen to be one of the archaeologists who recently unearthed hundreds of skeletons in Nuremberg, Germany. A construction company was planning to build a new retirement home near the St. Sebastian nursing home in Nuremberg. However, before beginning the construction process, they decided to conduct an archaeological survey of the property. Soon, city archaeologist Melanie Langbein and her team started excavating and what they came across was totally unexpected. The survey h…