up next on "american artifacts" we travel to southern virginia near ne north carolina border to visit the former brandon plantation with jobie hill and learn about her saving slave houses project, joined by several archeologists and preservations and a team that came to document brandon plantation with a series of 3d laser scans. >> we're here to do laser scanning and documentation of a slave house that is here. this is part of an independent project i am doing that's called saving slave houses, which is a database of all the known slave houses in the united states. it is a staffing central postory of instrumentation and documentation of slave houses in the united states. i have partnered with turnbull, the company that makes the survey equipment that i use, to do kind of the highest level documentation that is available to us today, which is 3d laser scanning. it's important to do this because one documentation is a type of preservation. slave houses are buildings that are disappearing from the landscape, so by documenting them, that's one way of preserving them. documenting them and

up next on "american artifacts" we travel to southern virginia near ne north carolina border to visit the former brandon plantation with jobie hill and learn about her