Deep Persistent Slabs
- Alpin
- Limite forestière
- Sous la limite forestière
- Probabilité
- Unlikely
- Taille
- 1–2.5
Basal facets or a facet–crust combination persist near the ground. Triggering is unlikely, but this type of deep persistent layer is inherently uncertain and may still be triggered in isolated, steep terrain with a thin-to-thick snowpack.