Madam [EDIT: Sir],
These Scubaboard forums are not for you - you should not be here. You live with the hope and desperation that a parent would feel - I can understand this somewhat since I am a parent, although I am fortunate in that I have not suffered your losses. However, you are not a scuba diver and I am, albeit a modest one. From what I know, and from what I have read, you son in not in those caves. As one parent to another, you are a fool if you cling to that notion. I don't know where Ben is, but you will have to look for him somewhere outside of Vortex. I know that to you Vortex will have become familiar, but he is elsewhere.