I'm in awe of Geoff Carter. He's a structural archaeologist in northern England who specializes in how people used to go about building things. It's amazing what he can deduce from holes in the ground.Geoff shot to fame with an analysis that showed Hadrian's Wall was originally timber.
As part of a documentary, he's recently posted this article about earthworks alongside Hadrian's Wall.
A lot of his other work is on prehistoric structures, such as roundhouses and forts.
The most amazing thing about his archaeology reports is that they are actually well-written, highly readable if you can cope with the minute detail, and sprinkled with fun phrases. I wish all academics and business people wrote as well as him. I particularly like his view that the proper study of mankind is postholes.