This is a really cool find...can u imagine people up there doing rituals and hearing the sounds resound through the hills...amazing...kinda sounds
like a primative version of the Jamican Steel Drums.
Great post. In cartoons, they always have ancient man banging rocks together in order to make noise, but using hills to echo sounds, is pretty
ingenious. It's kind of amazing, that they would have thought to carce these rocks in an area that has acoustic values.