Question

where did big alvanches come ?​

Answer 1

Answer:

Most avalanches occur in the backcountry, outside of developed ski areas.

Answer 2

Hello Mate Here is your answer!

Answer ) -

22,000 Huascarán avalanche; triggered by the 1970 Ancash earthquake Peru 1970

2 2,000−10,000 White Friday

Hope it helped you a lot !