Neither Caves Nor Tombs

After long hours of research and when the authorities decided to have a descriptive look at it, they found that they are not just normal pits that we see around us. They were something else entirely. They found no evidence of tombs or caves. Then, they found something else that was about to change the existence of civilization entirely. The research team was now confused and was getting tired of the mystery that was roaming around their head. Just like you. Have a little patience.