That they used on this site for 300 or 400 years has the potential to be preserved in more or less the same state it was thrown away in, under the ground where we're standing, which is an incredible opportunity. just think of the range of stuff that we could be standing on right now, and what kind of story that can tell us about life here almost 2,000 years ago. they've dug boreholes to monitor what's happening, and at teesside university, they're analysing soil samples. specifically, we're looking at moisture levels, total carbon, total nitrogen, the chemistry and microbiology changes that go...