Dwarven Machine Room

http://images.kingdomofloathing.com/otherimages/mountains/dwarfmine_machineroom.gif

The machine room is one of the rooms that are able to be visited from the Dwarven factory complex.

Clicking on various parts of the picture allow you to interact with those parts. There are four hoppers, each of which takes one type of item. Two controlling machines, and a "Gnomish Vacuum Chamber Supply, Inc" contraption that can operate on various things from your inventory (possibly losing them).