To celebrate Minecraft's 15th anniversary, the developers have introduced 15 challenges designed to test your skills. One of them requires you to find the Mystery Cave and solve all of the puzzles, which will then earn you the MCC Crown Character Creator Item.
MCC Bedrock Server – How to solve all 7 puzzles in Mysterious Cave
To help you complete all the MCC x Minecraft 15th Anniversary challenges, we'll explain how to find the Mystery Cave and solve all the puzzles.
The Mystery Cave is located in the high mountain between the Grid Runners and Meltdown, on top of the Toy Vendor. Go to the water elevator to the left of the Toy Vendor. The elevator will quickly take you to the entrance of the Mystery Cave.
Enter the cave and keep going until you see the paintings on the left and an NPC (Puzzle Helper). If you missed a certain challenge for a day, don't worry, you can still complete the puzzles in the second week.