While up the lakes camping within my ski club, a friend and I were exploring 'off-the-track' paths up in the surrounding bush area around 7-8pm when we stumbled upon an old rotten shack on the right side of the 'path' (remember that). The shack looks like 4 old wooden outhouses in one. Within the near pitch-black darkness, all we could make out with low-beam torches were strange symbols and even stranger shackles locking the door in place. This was weird as the rest of the 'Cabin' looked as though you could've punched a hole in the rotten boards. Thinking it was a coincidence and someone just wanted to keep their goods safe, we started to walk off, but that's when the weird stuff happened. The whole 'cabin' began to shake like someone or something was trying to escape. As we booked it back to the club the screaming started and consumed our ears, it sounded high-pitched as though it was a woman screaming in agony and pain, yet with no sense or rhythm to it, just screaming. Having zero clue what happened that night, we prepared the next day to continue our trip through the paths, this time around 3-4 pm with daylight still present. As we arrived at the shack it was different, half collapsed, no chains, no locks, nothing. The weirdest bit was the cabin was now on the left side of the path, a complete opposite to what we witnessed the night before. We didn't enter the 'cabin' as we preferred to live to see another day, and the symbols on the front wall were creepier in the daylight. As far as December last year, the shack still stands where we last saw it, on the left.