Came across this place a couple of years ago... its a great piece of engineering (I think anyway). I took the Yuneec to have a fly around.
Got a bit close to the arch as I came back through.. it was very close. When I get proficient flying the thing, ill go back and have a go at flying lengthways through the arches which were apparently put in to save bricks.. very cool. I did record this in 4K but it was going to take 5 hours or so to upload, so I re rendered it in 1080p. Still took an hour.