The tablet is covered with Witherbark troll markings. Rin'ji's secret truly is a mystery... $B$BIt's possible that you might have something quite valuable on your hands here. On the other hand, quite the opposite is also possible. A Witherbark troll in distress would probably do anything to find his way out of trouble...
Oran Snakewrithe, a well known scholar on matters concerning the Witherbark trolls, may be able to decipher the tablet. She is known to reside within the Magic Quarter of the Undercity.