Answer: icefall

AnswerCrossword Clue
ICEFALLSteep part of a glacier
ICEFALLIrregular glacial mass
ICEFALLGlacial matter
ICEFALLFlowing glacial feature
ICEFALLFrozen avalanche
ICEFALLExtremely dangerous winter event
ICEFALLGlacial breakup result
ICEFALLCrumbling chunks from a glacier
icefallmass of ice overhanging a precipice
icefalla kind of frozen waterfall
icefallfalling of ice from a glacier, iceberg, etc.
icefalljumbled mass of ice in a glacier