Shiraz is most likely more than 4000 years old. The earliest reference to the city is on Elamite clay tablets dated to 2000 BC, found in June of 1970, while digging to make a kiln for a brick making factory in SW corner of the city. The tablets written in ancient Elamite, name a city called Tiraziš. Phonetically, this is interpreted as /tiracis/ or /ciracis/. This name became Old Persian /širajiš/; through regular sound change comes the modern Persian name Shiraz. The name Shiraz also appears on clay sealings found at Qasr-i Abu Nasr, a Sassanid ruin, east of the city, (2nd century A.D.) . As early as the 11th century several hundred thousand people inhabited Shiraz. It's size has decreased through the ages. Incidentally the oldest sample of wine in the world dating to approximately 7000 years ago was also discovered on clay jars recovered outside of Shiraz.