Talk about your big bathtubs

There’s a neat photo in the January issue of Physics Today that shows just how big the Super Kamiokande neutrino detector is. I’d heard that it was big, and even when I saw the pictures from the shattered PMTs incident, I never realized just how big it was.
There are more pictures that also show just how big SK is. Those are some guys in a raft at the far right of the this image. They’re cleaning the huge PMTs that make up the light detecting system of SK.