DESCRIPTION
Today Dig Watch takes you to the very centre of the trench. You'll hear from Jackie McKinley who's excavating what's at the very heart of the neolithic building the team's uncovering. What is the archaeology telling us about what the mysterious blob on the geophysics actually is in reality?
Tomorrow is Martyn's final day on Dig Watch at the Ness of Brodgar and he wants to hear from you! Where would you like him to go on site, who should he speak to and what should he ask them? Let us know in the comments.