Tube
Fig. 6: This is no gun but just a tube in the wreck of the Liberty. — Nikon Coolpix 5400, Fisheye, Subtronic Mini strobe, Tulamben, Bali, Indonesia, 27 march 2005 E5400; Δt=1/125 s; f=24 mm; f/4.6; ISO 50; 27 March 2005 09:00:01