Chew Green Camp 3

As the Chew Green  camps overlap and descriptions are sometimes confusing,  it is appropriate to better define them. 
Camp 3 is the northern most marching camp and is about 605 x c.985'.  Its southern perimeter overlaps Camp 1, and it is thought to be the next oldest camp at this location,
See:
http://roman-britain.co.uk/places/chew_green.htm
http://www.pastscape.org.uk/hob.aspx?hob_id=9