Nostrils.
Luckily, no numbskulls are able to run their off-road nuisances on the Moon yet — mostly luckily for them, because they’d run right into a hole like this, and pllllt! That’d be it.
Except for this off road nuisance.....lol
http://www.virginmedia.com/images/moon-buggy-apollo-431x300.jpg