This spread-out site near the village of Isques to the south east of Boulogne-sur-Mer features a collection of six Wellblech shelters with two R630 heavy machine gun casemates on each flank.
The site also features a R658 water storage tank bunker and a R607 twin-room ammunition store.
Only two of the Wellblech shelters are currently visible – the rest completely overgrown – while the roof of the R658 is still accessible but the entrance has been filled in with soil. The field is used for crops so can be difficult to access at certain times of the year.