Print crossword: Defensive Structures and Landforms

Across

1. Fortified stronghold on a hilltop

4. Search for information quickly online

7. Restart a computer system anew

9. Long narrow excavation in the ground

10. Large property with land and buildings

2. Japanese martial art focusing on harmony

3. U shaped metal object for luck

5. Flat map section for land division

6. Dry creek bed often found in deserts

8. Isolated hill with steep sides