Nether dark caves

Hello! I come to propose an addition to minecraft. This addition will be a structure in the nether which could be called "dark caves" which will be a small cave where there will be inside the remains of an abandoned civilization and which will have a disturbing effect (I am not sure for the worrying effect but it could be good) to the nether. It will not be a cave like in 1.17 (or1.18) to mine ores but rather a cave which will be decorative and for the atmosphere and the immersion in the nether and which could be used to perhaps recover some items in chest. Sorry if my english is bad but i'm don't speak english. ^^'