A muddy brick passage

From Reddit Choose Your Own Adventure

As you wonder if you will ever find the secret you are blinded by a bright light. As your eyes adjust to the light you realize what it is. It is a treasure trove full of gold, diamonds and a king's outfit. This is the SECRET. Before start to take as much as you can carry, diamond golems appear out of nowhere point their weapons at you while a ghost king decides your fate. You wish you hadn't tried to find the secret.