Prevent Leaking Underground Gases Having Overly Lurid Effects”

Gondwana gains power by tapping subterranean gases. Quakes have caused pipelines to rupture and they are venting and need to be capped. The inhabitants want an automatic machine to pass over rough terrain and deal with the most severe leaks that are the most difficult to reach. Design & build a device which will place a circular disk (‘the plug’) on a defined target area.