It seems extraordinary that here at Stansore Point, miles away from anywhere, a temporary manufacturing facility could have been set up to produce six of the giant B2 Phoenix Caissons that formed part of the temporary Mulberry Harbours used to off load the cargo needed for the invasion of Normandy.
Although partly washed away, the main Construction Platforms form a line 374 metres long, 11m wide and 1.3m high large enough to construct all six caissons simultaneously.
On either side are the Rolling-track Walls which carried timber rails, and were used to winch the caissons to the launching area. The bases on which the winching gear was mounted still survive.
Also visible are a pair of "Dolphins" which formed part of a pier head used to load ships departing for Normandy, and also, one suspects, to bring in the large quantity of materials needed for the construction of the site.
Two of the Phoenix Caissons made it back to Weymouth after the war and can still be seen in Portland Harbour.