Just for fun, here’s a quick run around the tunnel looping around the bottom of what was the diving pool. Acoustics down here are really something.
The ‘Ninja’s’ tag is from the 1980s. Not sure who wrote ‘1950’ on the wall next to it but it’s a safe assumption that given it’s style and the appearance that it was done with a brush – that the date of when it was done was indeed 1950. Graffiti that has survived for 60 years – another rare find.