In reply to Michael DD:
i dont have the "alpen en bloc". but traversing the lip to the top is not "zentrale-traverse" (but it looks like a nice problem for itself). its like you have written; "zentrale-traverse" traverses below and exits via the 7a-dyno far right!
bit off-topic here but important nevertheless, cause its a shame that people get missleaded (and pay for that):
looks like the "alpen en bloc" got it wrong, but its quite common that people who like to make "business" with guides tend to not work too carefully cause that woud be too costy (time!). friends have seen how (not the "alpen en bloc") an editor has "worked" his way through an (very popular) area and it was to say at least; embarrassing!!! to point that out: you can see at the webpage of the "new swiss bloc" guide a pic of how the guide is made up. it looks nice, but there is an (important) error on that very picture that shoud make add for the guidebook. the boulder "devils and dust" does not start sitting all the way down - thats still a project - it starts at the lip. it would have been easy to find that out... but if you dont take your time and want to make monney...