Sitstart left of the back entrance of the cave, as for Behemoth (rallongé) and at the end of the roof, before exiting, traverse left through sandy holds and finish on pedestal with the GR mark.
NB: this problem was opened without the part of the cave opposite the 'fish mouth' (see drawing) but a non eliminant version is probably nicer. Slightly easier using the rest offered by the left wall.