Some of the Dead Sea Scrolls were hidden in jars which were later found in the excavation of Qumran. This type of pottery is unknown elsewhere: since it was found in the caves where the scrolls were hidden, and in the Qumran ruins, many believe it is conclusive proof that the scrolls were written in Qumran.
The Dead sea Scrolls. Between 1947 and 1956 Qumran has been the most important archaeological site of the world . In this period a collection of 972 ancient texts in 11 different caves has been found. The majority of them are made of parchment or papyrus, mainly written in Hebrew and Aramaic and few in Greek. http://paolo-deadseascrolls.blogspot.com/2011/06/final-report.html