After more than 30 years of excavating the remains of a Philistine city, a team of archaeologists says it believes it has found a cemetery belonging to the ancient people on the outskirts of Ashkelon in Israel.

The team has unearthed skeletons and artifacts that it suspects had rested for more than 3,000 years in the cemetery, potentially offering clues to the Philistines’ lifestyle and perhaps providing some answers to the mysteries of where the Philistines came from. Much has remained unknown about their origins.

“When we found this cemetery right next to a Philistine city, we knew we had it,” said Daniel Master, an archaeologist from Wheaton College in Illinois. “We have the first Philistine cemetery that’s ever been discovered.”