Story last updated at 3/12/2014 - 2:26 pm
Tongass National Forest officials are reminding Juneau residents to use extreme caution when walking in the vicinity of Mendenhall Lake and Glacier.
The Forest Service discourages visitors from crossing Mendenhall Lake due to thin or unstable ice and other hazards. Fluctuations in air temperature, as seen in recent weeks, and numerous icebergs can cause the ice to crack and melt in places without detection.
Particularly dangerous conditions exist at the waterfalls and the glacier's front edge, or terminus, where visitors risk exposure to unstable ice and even the sudden and forceful calving of the glacier.