🇪🇬 Egypt · Buried city
Tebtunis — Submerged Harbour and Canal Bridge (Kom Umm el-Brigat)
Middle Kingdom to Byzantine (c.1800 BCE – 400 CE) · Egyptian / Ptolemaic / Roman
Fayum southern Tebtunis on Bahr canal mouth — quay and bridge harbour basin 1–2 m under field silt, cartonnage papyrus source.