Klouto is the mountain just past Kpalime and it is stunningly beautiful.  The drive up can be a little hair-raising, especially if it's raining, but the views are amazing.  Klouto is best known for the myriads of butterflies in the surrounding bush and once you're there it is easy to organize a guided walk to go and see them.  The walk will normally take you up through some of the remote villages, past coffee and cocoa plants and ends up at a waterfall, which, while nice and cool after the walk, isn't all that spectacular.  Personally I think there are better waterfalls around but the walk was pleasant and the butterflies were amazing.  One thing to consider though is that a lot of the tour guides also have butterfly collections so if you don't want to see your wonderful butterflies being hunted down by a large (and often lethal) net, I would ask the guide to leave it at home.