Wow!!
Great exploration.
I guess the temperature should be about -15°C to -30°C.
The cave looks scary with some part having sharp ice spike at the top while others with crystalline ice structure attached
Great photos by the way.
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The temperatures here have swung from -12°c to 10°c in the span of a week.
It was a little cooler at the glacier but felt slightly above zero.
The cave was pretty scary because of the dark and slip hazard. We kept trying to scare each other by saying there could be a bear inside!