Purple Aetheryte: What is it?

[popdai]

Hidden raids inside caves? <.<'

BCNMs? <.<''

A rift? <.<'''

OR simply nothing? <.<''''

[Eruantien]

ya there a few of these around eorzea, they have always been there though.

[Gramul]

I wonder what the where (are) planning to do with all these fenced off areas.

[viion]

made in preparation for new areas and such? When they eventually come.