thehungrytroglobite
Well-known member
Pitlamp said:thehungrytroglobite said:Pitlamp said:There are two caves a couple of kilometres apart. One draughts inwards in hot weather and the other (at lower level) draughts out. It would be useful to know if there is an air flow connection between the two caves.
Can anyone think of a way of labelling the inflowing air in such a way that it could be detected at the outwards draughting cave (in the manner of water tracing)?
eat a ton of baked beans, go inside, fart, then have a couple people on the outside sniffing for any bean-reminiscent odours
I just knew someone would make that suggestion sooner or later!
As someone who has had to spend 10 minutes in a flat out crawl behind someone who had just scoffed two whole cans of baked beans I can testify to the accuracy of this method