Thin ice below sandbar cutbank at Fairbanks to Nenana Stop 12 Photo Credits: Chas Jones Thin ice can form below the cutbank of a sandbar and can be hidden from view when crossing over the top of the sandbar. Process Observed: SandbarThin IceTravel Hazard Date Process Observed: Tuesday, April 16, 2013 Galleries: Fairbanks to Nenana Trip Stop 12 Gallery