[Morsul the Dark]

The Dead Marshes although this is a far more poetic interpretation

The pale lights of the marsh. Frodo in a dream state wakened by Sam shadow of a friend. Hmm. The winged Nazgul. Naught shall pass could be the dead still lingering there not passing on. Dead is obvious nothing grows. Serene again a stretch Gollum not complaining about the smell. “Sméagol Bears it.”