Hello Bousquet (et bonne année !) !
Mais il faut savoir que, comme le signale Vnoa, le trajet est quelque peu accrobatique (il y a des dénivelés de 3 à 4 mêtres, qui cependant, restent franchissables). Mais je trouve que Ouestusa ou PTS devraient être un peu plus explicite sur ces difficultés (somme toute raisonnables, mais la 1ère fois, il est stressant de savoir si on ne va pas rencontrer un obstacle vraiment infranchissable -pour le retour-).
Tu trouves que ce texte de PTS sur Cathedral Wash n'est pas assez explicite sur les difficultés ? Il me semblait que j'en avis déjà écrit une tartine

(pour l'anecdote, le second hiker sur la photo du bas de la page de PTS, c'et moi) ?
What makes it stand out is its great variety of shapes, a multitude
of benches and ledges staggered at different levels, dry falls, and pools of water
or dry mud. All contribute to create a moderate challenge, as well as interesting
photo opportunities. Progressing through the narrows is a big part of the fun,
as you must find your own way on different ledges to get around obstacles. It is
never really dangerous as long as you use caution and are not afraid of heights.
As with any canyon of this type, don't hike it if there is a chance of rain.
From the pull-out, cross the Lee’s Ferry road and enter the wash toward the
east, close to the concrete drainpipe. After walking inside the wash for about
fifteen minutes, you'll come to an impressive drop-off. You can bypass it by
descending cautiously on its right side. Now, things become really interesting, as
you enter a narrower, deeper, and highly eroded section. As you progress inside
the canyon, you'll encounter a series of pour-offs that you'll bypass for the most
part by following ledges on the left side. This sometimes requires a bit of scrambling.
No particular climbing skills are required and any normally agile person
should be able to do it.
Philippe