[Good question! And yet one that won't have an immediate answer... Although someone certainly tries. Down through the tunnels of Union Cave, there's a couple of musical chirps - not the same sound from before, but certainly someone trying to imitate it!]
[And then someone else responding, voice echoing in the caves.]
Oh, I agree. It is a lovely sound, isn't it? Do you think we can find it?
Union Cave
[And then someone else responding, voice echoing in the caves.]
Oh, I agree. It is a lovely sound, isn't it? Do you think we can find it?