Fig. 36: Mental preparation before ice diving. The feeling under ice is quite different than in open water. One can't get up everywhere and everytime. Some need to get used to this. DiveZone ice diving event, Lake Klöntal. Nikon D3; Δt=1/4000 s; f=70 mm; f/2.8; ISO 200; 1 March 2014 12:37:00
