Rogues of the Borderlands
Cave Trolls are among the largest and most powerful of the Wild Troll breeds. They are often ten to fourteen feet tall. Awesome in power, with tough, scaly hides, they fear only one thing: sunlight, which turns them to stone. Cave Trolls are generally solitary and seldom band together, even in family groups. Frequently cannibalistic (they will eat virtually any sort of meat), their race survives because they live a secluded lifestyle.
Cave Trolls are almost blind but find this no handicap, as their senses of hearing and smell are superb. Their elongated arms are like steel cables, and their scaly hides are as pallid as those of most cave-dwelling things. Their feet are huge and splayed.
Source: Middle-Earth Roleplaying Wiki