2 - 3
FATMAP difficulty grade
## Ascent # 2h From the Col de Marcieu, first follow the SW road of Chemin de l'Aulp du Seuil, then continue along the marked forest track towards NW passing under a ski lift.
Continue along the path that branches off to the SE until you reach a small clearing (l'Alpette), before the slope steepens a little more to reach the circus of the Aup du Seuil passage.
Go up in bends, then turn right and come to rest under the cliff. Once at the top of the cliff, you can climb to the top of the Aup du Seuil (1922 m), or use one of the straps. ## Descent # 1h30 You can go back by the same path, or turn off halfway down the slope to take the Guillots trail.
The downhill trails will be chosen according to the time available, there are plenty of possibilities. ## Variants # The passage of the Aulp du Seuil gives access to the Marcieu valley which allows you to reach more to the S the Lances de Mallissard, the Col and the Dôme de Bellefond and many other jewels of Chartreuse.<br/><br/>_This Adventure has been shared under the [Creative Commons Share Alike](https://creativecommons.org/licenses/by-sa/2.5/) licence._