The Siren - Day V /June 25, 2013 by Kristjan Torr Filming under the waterfall. In our hands Filming under the waterfall was a painful experience. A raging torrent and strong winds permeate the area making hard to manuver. Kimbo Kim The crew gathers under the torrent to block the scene. Seljalandsfoss And that a wrap for the Korean part of the production. Time for steam and sleep.