How deep are the caves? The laborer demonstrated by throwing a big stone down, the sound came after 15 seconds!

You must have seen laborers working in mines. They have to carry out their work while playing with dangers. Often those people work in caves. Have you ever wondered how deep a cave can be? Recently, a video is going viral on the social media platform Reddit, in which a laborer throws a stone into the deep pit of a cave and records the sound. In this way he is trying to tell how deep the cave is. The video has been posted on Reddit’s discussion group r/interesting. As soon as the stone goes down, there is complete silence for about 15 seconds. But then suddenly a loud sound comes and it becomes known how deep the cave is. We calculated it from the kinematic equation and from this we can estimate that the depth of the cave will be about 1100 meters i.e. 1 kilometer. However, this cannot be estimated accurately.