The vertical magnetic gradient map (right) was produced to illustrate zones of magnetic variation.  Several linear magnetic features were investigated by the archaeologists in subsequent weeks. Surface features such as areas of boulders (as in the south central portion of the main survey block) and fencing (south east corner) may have masked signals from subsurface sources. 

GPR data were used to pinpoint discrete objects in the subsurface.  Hyperbolic reflections such as those shown below may indicate a foundation in the subsurface.