Who knows their trolls?

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Im not exactly sure how this is supposed to work but I really just want to know the answer to this question, so if anyone can help...

Does anybody know anything about stone/cave/hill/mountain/snow trolls? I just want to know like where they lived, and if they had any notable differences (im making a game and I wanted to put them in). So far, all I know is that they existed during the Third Age...

Im guessing from the names that the main difference is their niche, but really...whats the difference between mountain/cave/stone/hill...seems like thyd all ocupy the same area. It'd just be nice to know the actual place names that these races occupy. Thanks.

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