Wn39 covered the sandy beach area between the town of Arromanches and nearby Asnelles which were landing sectors for British troops on D-Day.
The site is split over three tiers. The top level features a Vf2d - a two room, shrapnel-proof, personnel shelter for the troops manning the casemates at this site.
Below this is a R612 casemate for an assault gun, facing east, and while not accessible inside you can see that from the outside it has taken a lot of high explosive rounds to the front as Allied armour moved inland from the east.
The smaller R677 casemate stands on the lower level of the site - still high up on the cliffs from the beach - and can be found surrounded by holiday housing at the end of the Alles des Blockhaus. Again facing to the east, this casemate housed an 88mm Pak 43/41 cannon.