entrance of an ice cave in matanuska glacier, alaska; covered with snow.

alaska anchorage blue cave cavern cavity chugach chugiak close cold cooling covered crystals dark detail details durmitor eagle eisriesenwelt endless entrance erebus frost frozen glacier glenn gloomy holidays ice icicles interior intrusions low matanuska melt mendenhall mount nature needle outdoor palmer park permafrost ponded prince river snow sound speleology spencer stalactite stone surface taken temperature texture transparent traps travel trek tunnel water white william winter worthington