Here is a mud map prepared by an ArchSoc volunteer. This map was created using careful observations of the landscape and a pacing unit (measuring distances with the length of one’s stride). The hand-drawn map was then animated, as shown below.
Compare to this google satellite photograph:
As we can see, the scale is a little out, however, the mud map captures all significant features of the site. This comes in handy when familiarising oneself with the site and when internet access is limited.