Very hard to hear for the waterfall, BUT not like 0:27, neither 0:38, but it's more like "single-clicks" with sometimes five seconds between, sometimes minutes, sometimes hours, BUT not very much, and not as short between each "click" like in the video... it's a little bit like 0:20-0:22 (if it's a click, lol?)... first I though it were my spotlight-lamp, but it's not![]()