Scree and talus are both loose rock on a slope, differing in size. Scree is small fragments that shift and slide underfoot; talus is large blocks you hop between. Both form from rockfall and erosion below cliffs, and both are tiring and require care, but they're traveled very differently.
| Aspect | Scree | Talus |
|---|---|---|
| Rock size | Small fragments | Large blocks & boulders |
| Underfoot | Slides and flows | Hop between blocks |
| Ascending | Slow, frustrating | Awkward, ankle-testing |
| Descending | Can sometimes 'scree ski' | Careful hopping |
| Instability | Shifts as a mass | Individual blocks shift or tip |
It's scree if…
- The rock is small and loose
- It slides under your feet
- You sink and slip on the ascent
It's talus if…
- The rock is large blocks or boulders
- You step or hop between pieces
- The blocks are big enough to stand on
Verdict
Frequently asked questions
What's the difference between scree and talus?
It's mainly the size of the rock: scree is small, loose fragments that slide underfoot, while talus is large blocks and boulders you step or hop across. Both accumulate below cliffs from rockfall and erosion.
Which is harder to cross, scree or talus?
They're hard in different ways. Loose scree is exhausting and frustrating to ascend because it slides backward with each step; talus is awkward and ankle-testing because you balance and hop between blocks that can shift or tip. Most find ascending scree the bigger slog.
What is scree skiing?
Scree skiing is descending a loose scree slope by sliding and plunge-stepping as the small rocks move with you, like skiing on gravel. It only works on suitable loose scree, can be hard on the ankles, and is discouraged where it worsens erosion. You can't do it on talus.