I love the idea that the room plays back a tragedy from a wholly other location, the location the rocks are from--that's novel and powerful.

You feel a haunting so old, so deep, and so dreadful should at least have the decency to be autochthonous. But then you can take a recording anywhere, so long as you have the technology to play it, and we ourselves are the players of the stone tape. --Nice

Like every story, it happens in our heads. --Yes indeed.

and how great that it's on YouTube! Might give it a look.