TToR is a mod for warcraft, it pretty much completely replace the existing things in warcraft with all the stuff that Rightfield has put together. The new races in TToR are Wood Elves, Trolls, a demon race, and a strange lizard-like race. Go look at the official page for more info. Also take a look at WC3Campaigns for info.
It shouldn't be because it's not a map. It should be in an entirely different place.(I forget where, I think it says that in the readme) If somebody named one single map "TToR" then it goes in the map folder. But Rightfields mod doesn't.