A forester was examining a strip of untouched forest when he came across a cabin that had been erected. Everything around appeared undisturbed. He was perplexed as to how the material for the structure could have been brought in without leaving any evidence. If you were a few steps away the cabin disappeared into its surrounding foliage.
He brought in official help to examine the hut in more detail. They found a small living area with books and an old typewriter. There was a tiny area designated to be the kitchen. Shelves had been erected to store the minimal food requirements.
As it is illegal to squat in a forest they pinned an eviction notice on the door. When they returned a month later, things had been removed and the place was looking a bit dishevelled.
Two weeks later the cabin was gone but some of the big things were left behind. These were removed by the next day. All that was left was a symbol created out of charcoal. This turned out to be an international squatter symbol. The circle indicates the shelter and the arrow indicates that a person entered, stayed for a while and then left.
The weirdest thing about the whole episode is that no-one saw anyone bringing the equipment and no one saw anyone leaving with it. The place was left neat and reasonably undisturbed.