The cache is in a white plastic 4.5kg mayonnaise container. Minus the mayonnaise. Plus a bunch of stuff I had lying about before I left: calculator, compass, pen-sized telescope, a tamogochi, two smurfs and a keyring. There's a pad and pencil visitor's 'book'.
Queen Victoria Spring was named by Ernest Giles who found it after travelling for 17 days without water. It's not really a spring, but a claypan which collects water after rains. It certainly saved Giles' life. He stayed a week before continuing west on his expedition.