A well spread out site located to the south west of the port on the outskirts of Le Treport, Tre09 featured defensive machine gun casemates protecting the main roads in from Dieppe.
Still visible today is a R515 armoured machine gun bunker, two R630 armoured MG bunkers, a R622 double group personnel shelter, and a R680 casemate for a 7.5cm field gun.
The two R630 casemates are in private gardens while the R680 and R622 are on agricultural land, although all are visible from the roads into the town.
The R515 stands in a public park and gives you a magnificent view over the port area below.