I’ve been watching a series on Amazon (with a trial subscription to Acorn TV) that was originally broadcast on Channel 4 in the UK – “Time Teamâ€.
https://en.wikipedia.org/wiki/Time_TeamThe episodes I’ve been watching most recently involved sites from the era of Roman occupation. It was interesting that they found things like pieces of mosaics, roof tiles and pottery and even coins on farm fields which had been recently plowed and had been farmed for hundreds of years, lying right on the surface.