The Associated Press is reporting that a commercial farm site dating back to Rome’s Imperial era has been unearthed in the city, as a result of subway construction. Archaeologists took advantage of the planned construction to explore nearly six stories deep around St. John in Lateran Basilica.

A large irrigation basin was found, along with an iron pitchfork, traces of a waterwheel, and other tools. There is some indication that the farm may have grown willow trees and peaches.