Mentioned before, but I cannot say it enough: the Rwenzori mountains is one of the most impressive places I have ever been. The first days of the tough trek went through forests and swamps.
On this day we had the feeling that we were just wandering from the set of Jurassic Park onto a set of a Pirates of the Caribbean.. Slippery wooden logs were the only things keeping us from sinking in the mud and this is the first and only trekking I ever did where locally bought 8-dollar gumboots made more sense than expensive hiking shoes.
Oh, and this is the dry season. To cross this in the rainy season you really need a lot of determination :-)