Persistent Slabs
- Alpin
- Limite forestière
- Sous la limite forestière
- Probabilité
- Unlikely
- Taille
- 1.5–2.5
Two persistent layers from the end of December and mid January exist in the mid-pack down roughly 30 and 50 cm. There has been little activity on these layers recently, however stability tests still show moderate "sudden" results on these interfaces.