It is a hidden cave found by a local villager. As the villager a miner he thinks it is a mine. the fire stays without being put out because it is a special kind of power fire from the ancient times.the torches can be taken away from the holder and be put in the hand of the villager. I built it because I like secret caves ,adventures, etc. This would make a great set as it is easy to build and adventure lovers will love this. It is very ancient .The parts used in this set are very common parts. These part can be easily found in medium size lego sets.