Authorities in the eastern Arizona community of Show Low said two teenagers spent two frigid hours hanging onto a dead tree after ice on a lake began to crack.
Show Low Fire District Capt. Brent Mix said they were rescued late Wednesday.
A third teen stayed on the snow-covered bank of Fool Hollow Lake and called for help when the other two got stuck.
The rescued juveniles were taken to a hospital for treatment of what Mix described as mild hypothermia.
A total of 25 fire and other emergency personnel from several agencies responded.
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