Silvio Roggo (ed.), "Long Walls of Constantinople" in last modified February 16, 2024, http://syriaca.org/place/5616
  
    
      
        
          Long Walls of Constantinople
          Anastasian Walls
          ܫܘܪܐ ܒܪܝܐ
          
            The Long Walls were erected in the early sixth century during the reign of Anastasius. They stretched 58 km from the Black Sea to the Sea of Marmara and guarded the western approach to Constantinople, more than 70 km to the west of the city.
          
          http://syriaca.org/place/5616
          http://syriaca.org/johnofephesus/places/5616
          
            
            1577
          
          
            
            97; 327
            3.2.30; 3.6.25
          
          
            
            1577-1578