On their way to Mordor Frodo and Sam encounter various places with a different degree of weirdness to them. However, few of them stand out in the same manner as the Dead Marshes. Lying between the plain of Dagorlad and the Emyn Muil, they become a grave test for the travellers en route to an even darker place.
In Tolkien’s universe various notions can have special significance, which sometimes shows in small details and aspects. The concepts of light and darkness are deep and far-reaching: sometimes they are not a mere background for a story, but a very important player in the events of Middle-earth. In the present reflection I am going to look into the matter of sunlight and its influence on the dark powers of Middle-earth.