So had a second viewing today. The trees and such are quite large!
https://0vi4ga.am.files.1drv.com/y4m...&cropmode=none
https://0vi2ga.am.files.1drv.com/y4m...&cropmode=none
Also there is a concrete inspection cover in the corner on the left of those pictures. About a foot square. Might be a sewer running towards the access road?