Possible retaining wall for road and maybe a continuation of wall 4039 directly north. This section of wall also ends at the same northern limit as the basalt road 4010. No direct spatial relationship between 4010 and 4037, but there may have been a sidewalk, drain, etc. between the, Layers between road and 4037 and between walls 4013 and 4037 to be clarified upon excavation of these layers.