The lowermost part of a slab fracture, downhill from the crown.
![](https://avalanche.org/wp-content/uploads/2022/09/Annotated-Photos_Avy-Anatomy-1-Custom-Large-1200x1033.png)
Credit: Crested Butte Avalanche Center
Slab avalanches flow over the top of the stauchwall, often eroding it.
![](https://avalanche.org/wp-content/uploads/2022/09/anatomy-of-an-avalanche-600x415.jpg)
A simulated avalanche in motion, showing the stauchwall forming at the lower boundary of the slab. Credit: Natural Sciences
![](https://avalanche.org/wp-content/uploads/2022/09/anatomy-of-slide-600x450.jpg)
Credit: Crested Butte Avalanche Center