Deep Persistent Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 2–3
At the mid and upper elevations the potential for humans to trigger slab avalanches with depths to five feet poses a serious threat to backcountry users. These dangerous slabs will fail on a deeply buried layer of faceted snow that persist on all aspects. Previous tracks are not an indication of stability.