Norway maple and retaining wall

[gerogia456]

Hi I live in a house that is built on elevated ground. The neighbor below my house there is a 15-20 feet drop has a retaining wall. There were Norway Maple trees planted at my yard in a line a few feet from the wall. The trees have been there close to 20 years. Can the root systems damage the wall? Or do they actually help to keep it in place and avoid soil erosion? How can I tell if the roots cause any damage to the wall? The wall is rocks for the most part and has been there also more than 20 years anywhere between 20-50 years. Thank you

 

[treeseer]

Pictures would really help here.

 

[TheJollyLogger]

1. Yes, the roots can damage the wall.
2. Yes, the roots can stabilize the soil and prevent erosion.
3. The wall will show signs of damage.
4. These are all general facts that may or may not be applicable to your particular situation.
5. Reread your original post, correct syntax and grammar, attach pictures, and try again.