If you brighten the screen or the image and zoom in, you will see a crack that is going down. It probably indicates the cave like thing isn't too deep. Therefor

If you brighten the screen or the image and zoom in, you will see a crack that is going down. It probably indicates the cave like thing isn't too deep. Therefore, I also believe it's natural. [1]: https://picbun.com/p/K5ICFQGc https://picbun.com/p/K5ICFQGc But it sure is intriguing.