He has been working on this landscape since 1977 , not only recording the archaeology but pioneering investigation techniques and methods that have influenced the discipline internationally .
Powlesland 's archaeological work has focused on the Vale of Pickering in Yorkshire .
Powlesland has been working on this landscape since 1977 , not only recording the archaeology but pioneering investigation techniques and methods that have influenced the discipline internationally .
Powlesland 's archaeological work has focused on the Vale of Pickering in Yorkshire .