Archaeology is a destructive science. Once you dig a hole and remove material you can’t put it back. Having the best data as to where to excavate is key and that is where geophysical scans and core drilling come into play. The core drilling will hopefully tell us about the layers under the ground that are showing up in the geophysical survey scans and the drilling would only involve a 3 inch to 4 inch size core hole versus a 5 meter square pit dug into the boat formation. Excavations would follow after this is done.