Things that go bump in the night. (day)

Yesterday I was deep in the Aussie bush, beyond the black stump, miles from nowhere.
Sitting in my chair enjoying the nothingness when all of a sudden there is a load crash.
It sounded like a large, empty steel drum hitting the ground.
Baffled me, I continued sitting there in the bush, contemplating how grand it is being far from the maddening crowd