Solutions A long ditch or trench has 12 entries with similar clues
- moatdefensive ditch
- dykeDitch
- ha-haPark ditch
- ditchTrench
- trenchDitch dug as fortification
- dugoutSoldiers trench
- paradosFortified wall behind a trench for protection from rear
- traverseDefensive barrier of mud bank in front of a trench
- irrigateWater land by means of ditches, etc.
- entrenchFortify with ditch
- pioneer-corpsArmy body preparing trenches, etc.
- challenger-deep-in-the-marina-trench-in-the-north-pacific-oceanThe world's deepest ocean trench