The one down at Monash? Oooh jelly! It’s quite fascinating. Basically a big tunnel circle underground, with machines that can squirt atoms/molecules etc. at very high speeds at items in each target zone. Like a very big roundabout with high speed atom cannons instead of roads leading off it. This helps people find out what the items in the target zone are made of and their internal structure. Super useful for mining, engineering, medical stuff and a host of other stuff.