Persistent Slabs
- Alta montaña
- Límite del bosque
- Bajo el límite del bosque
- Probabilidad
- Unlikely
- Tamaño
- 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.