Upvote:2
It is hard to proof a negative but the lack of sources does point very strongly that they are one and the same.
@jcaron wrote:
The cave is here It is also known as Grotte de la Davouste, Grotte des Lyonnais, Baume des Lyonnais. Other than a number of copies of basically the same text about the dye which state they have been found in the Audoste Cave, I can't seem to find any reference to that cave, it's probably a transcription error which then got copy-pasted in many places.
As my friend said, in the comment I posted on the question:
Although it's possible that there were two nearby caves with similar names, it seems very unlikely that all the palaentologists think they were the same one - someone would surely have commented on the remarkable double discovery in nearby locations!
And:
My money says "Adaouste" (a name which feels "less French" to me than the alternative; but it could be Occitan).