🇱🇾 Libya · Fortress
Boreum (Al Burdi) – Desert Frontier Tower
Ptolemaic to Byzantine (3rd c BCE – 7th c CE) · Ptolemaic / Roman / Byzantine (Cyrenaica–Marmarica)
Desert–lagoon frontier tower at Marmarica's Cyrenaica edge, Boreum guarded the coastal road's last water before Egyptian desert and lagoon fishery.