A large collection of cairns of various types lie near the city.[13] Excavations here have yielded pottery and sherds of Roman glassware from a time between the 1st and 5th centuries.[14][3] Among these artefacts is high-quality millefiori glass.[13] Dated to 0-40 CE, it features red flower disks superimposed on a green background.[15] Additionally, an ancient fragment of a footed bowl was discovered in the surrounding area. The sherd is believed to have been made in Aswan (300-500 CE) or Lower Nubia (500-600 CE), suggesting early trading ties with kingdoms in the Nile Valley.[16] Ancient edifices have also been found in Heis.[17]