Mine Mystérieuse [Mysterious Mine]

Old Bobby (Old Bobby Henderson) a gold hunter hid a treasure map in his cabin just before he died. He had found a huge gold deposit of which he alone had the secret. In his mine, he leaves behind a series of puzzles that no one has managed to solve to date in order to extract as many gold nuggets as possible. You will enter this mine illegally at your peril. You have a maximum of 75 minutes left to find the gold and take it out. In an hour and a quarter, if you fail, the treasure will be lost forever.