Hi.
I've been there earlier on in the game, and I have decided to go back to the Archaeologist quest upon finishing the game.
I can't find a way of getting there anymore
If I remember correctly, you need to swim to get to the entrance.
I have spent 3 hours trying to get there but to no avail.
It IS in Rookridge... Isn't it? If it isn't I swear to God I will kill myself.
I think you have to jump off the bridge in the middle of the area to be able to swim over there.
It is in Rookridge but I'm not sure why you can't find it...
asthe game guide says "Swim past the beach with the entrance to Hobbe Cave to find a 2nd beach. Follow it arroundto the enterance to this crytalline cavern." Note: sometimes if you beat the game and chose to give it all away (if u beat the game you know what I mean) then your dog doesn't live, or so i'm told then some areas might be closed off (not 100% sure)
Hope I helped and not to be a soliciter but if you feel fable 2 was missing something wright in my thread "What Fable 2 left out"
Good Luck
Strength Wands and Beauty Fades, Only Wit Grows Day by Day
Go thourgh the hobb cave, enter it from the house where you exit it when you do the mission and just walk thourgh it to get to the beach. I think, if you quick travel to the hobb cave you start at the beach area, so you don't even have to run thourgh it