The Jewish merchant Benjamin of Tudela wrote in the 12th century that the Nubian kingdom of Alodia maintained a trading network terminating in Zwila, Libya, suggesting that the trade route went through Darfur.[20] Two Christian Nubian pottery sherds, datable to the mid-6th century-1100, were allegedly discovered in Ain Farah.[21] It has been suggested that aspects of the Medieval Nubian culture, like for example the purse as part of the royal regalia, were transmitted to the Chad basin through the Darfur area.[22]