1. Feint cropmarks show at least two crenelated lines of plough-levelled First World War practice trenches on a prominent hill to the south-west of Monmouth. Recorded during RCAHMW aerial reconnaissance on 13th July 2006, image refs: AP_2006_2324-25.
T. Driver, RCAHMW, 21st Sept 2009.

2. Cropmarks of the practice trenches were recorded with greater clarity during RCAHW aerial reconnaissance on 29th June 2015.
T. Driver, RCAHMW, 2015