Why are the odds of surviving an avalanche so low? Reason 1: When you’re buried in an avalanche you have about 15 minutes of good oxygen, but the average rescue time with a beacon, probe, and shovel is 20 minutes. Not a good equation. How does the AvaLung Help? Once the avalanche settles and you stop moving, the snow around your face and mouth begins to ice up, sealing off any air pores and forcing you to breathe in your spent CO2, which eventually leads to suffocation after about 15 minutes under the snow. The Black Diamond AvaLung takes in fresh air from the porous snowpack in front of you and when you breathe out, the AvaLung directs the spent CO2 behind you, away from your face and mouth. This results in over 58 minutes of good breathing time, dramatically increasing your chances of still being alive when you're dug out.