Download or read a copy of Hadrian's First Wall here
This is 10.4 meg pdf file. It has full colour illustrations, formatted for A4 printing as 40 pages plus a cover.
Structural archaeologist Geoff Carter's radical view of building in the ancient world, especially the archaeology of the lost timber built environment of Southern England. It is new research into of prehistory of architecture, available in a series of articles that are designed to be read in order, and to be accessible to the non-specialist - and there is even some humour