Thin ice and open water at Fairbanks to Nenana Stop 18 Photo Credits: Chas Jones Areas of thin ice and open water become more frequent as the warmth of the spring season progresses. Process Observed: Thin IceTravel HazardSeasonal ChangeOpen Water Date Process Observed: Tuesday, April 16, 2013 Galleries: Fairbanks to Nenana Trip Stop 18 Gallery