Filton Swastika?

Fifth columnist? Don't bomb me?

Interesting , the swastika being of course accidental the area around the marking shows up white which is possibly from excessive foot use note the white line connecting the swastika to the building . Now take note of the angle and the fact that the swastika casts no shadow and it is reasonable to assume that if it is a structure it is very low lying ,discounting 5th collumnists two possibilitys come to mind trench latrines or slit trenches

Slit trenches is exactly what I thought too. I copied the photograph, then zoomed right-in and that's what it looks like to me ? Not to say that it wasn't done on purpose to look like a swastika from the air, maybe confuse the Germans

I cannot locate the HE image. The link in the OP is dud?

historicengland.org.uk/images-books/arch.../RAF_HLA_134_RV_0667

Looking closely at the area immediately above the swastika you can make out what resembles a pentagram which is darker than the surrounding field . .This might be from long grass un an area wired off to make an enclosure . .the long shadows suggest evening on a summers day .Now what if the surrounding fields have been harvested and the swastika is made out of Hay or straw bales.The round object to the left of the swastika to the left of it might be a bell tent it has a path leading to it . might not there have been another bell tent where the swastika is and the swastika be the accidental markings of where beds were placed ?

2.4.11 Barrage Balloons Create a Hazard

Although a good deterrent to German shallow dive bombing the Bristol area balloon barrage proved to be far more dangerous to 'friendly' aircraft than to the enemy. Unfortunately February 1941 provided the first example locally of this problem, for it was on the 21st that a Hurricane of No.501 Squadron flew into a balloon cable at Patchway, causing the aircraft to crash 500 yards from the site and killing the pilot. Although this was the first such incident involving barrages around Bristol it was, sadly, not the last and the local balloons continued to give both regular and ferry pilots cause for concern, the most serious incident occurring some two months later when, on the night of April 30th, a Wellington bomber on a training flight from Cambridgeshire became lost. It subsequently collided with two balloon cables around Bristol's St.Andrews Park, where the aircraft crashed killing three of the crew, injuring three others and a balloon operator on the ground