East/West tension zones (tension zones are areas of steeper slope or where the contours are close together) ©BONAP | North/South tension zones (tension zones are areas of steeper slope or where the contours are close together) ©BONAP | Tension zone contours (tension zones are areas of steeper slope or where the contours are close together) for Cornus ©BONAP |
Tension zone contours (tension zones are areas of steeper slope or where the contours are close together) for Pinus ©BONAP | Tension zone contours (tension zones are areas of steeper slope or where the contours are close together) for Salix ©BONAP | Tension zone contours (tension zones are areas of steeper slope or where the contours are close together) for Salix ©BONAP |