Ditch

Afrosiab, Ditch	Afrosiab, Ditch	Feldberg, Northwestern wall and ditch	Haltern, Ditch, restored
Haltern, Ditch, profile	Syracuse, Euryalus, Moat	Vienna, Tiefe Graben	Vienna, Tiefe Graben and Hohe Brücke
Waldgirmes, Excvation of palisade and double ditch