Fish up a Blind Cavefish from the Pools of Vision in Thunder Bluff. Once you catch a cavefish, fillet it and check if it swallowed the ring.
One of the Forsaken from the Pools of Vision came to me and said he'd lost his ring to a blind cavefish in the waters there.
Or perhaps it was his finger. It was hard to tell; his jaw did not move and his Orcish was no better than mine.
In any case, I thought it would be a kind gesture towards our unusual visitors to catch and gut cavefish until the ring - or finger - was found.
Would you help?