Australian outback soundscape, meditative and chilling ambience - Vocal crew (Splice mates) in alphabetical order: arobee1134, bram, idisidi.
And no, I haven't the faintest idea what the hell these blokes are doing with the stones.

Remix note: The original and all embedded clips can be found on Splice (http://www.splicemusic.com/songs/Asaguare/outback-vision).