Roman Amphitheatre high on hillside 2nd C AD built by Emperor Trajan uncovered by landslide 1972 holds 6000 Plovdiv, Bulgaria b Published August 1, 2023 in Roman Amphitheatre high on hillside 2nd C AD built by Emperor Trajan uncovered by landslide 1972 holds 6000 Plovdiv, Bulgaria b Roman Ampitheatre, Bulgaria by P Dry