There's a yearly lottery pool based on who guesses closest to the time when the Nenana ice jam breaks up. The tripod falling over signifies when the river's mov

There's a yearly lottery pool based on who guesses closest to the time when the Nenana ice jam breaks up. The tripod falling over signifies when the river's moving. http://www.nenanaakiceclassic.com/ http://www.nenanaakiceclassic.com/