Lodge Field features

There is a feature running through Trench 1 which seems to run the lenght of Lodge Feild. 

Upon further investigation, it seems there are several parallel "ditches" running 15m apart. This one is the is the clearest.

Aerial photo of Lodge Field. Click on it to enlarge. All 9 features can be seen running from left to right. Also, there seem to be features running top to bottom.  I will carry out a gps survey on Monday to investigate further.