Engulfs in the fens (6)
I believe the answer is:
swamps
This could be a double definition.
'engulfs' is the first definition.
The definition and answer can be both to do with contact as well as being verbs in their -s form.
Perhaps there's an association between them I don't understand?
'fens' is the second definition.
The answer and definition can be both natural objects as well as being plural nouns.
Perhaps there's an association between them I don't understand?
'in the' is the link.
Can you help me to learn more?
(Other definitions for swamps that I've seen before include "Waterlogged areas of dense vegetation" , "Seasonally flooding low lands" , "Seasonally floode low lands" , "Bogs, marshes" , "Flooded lowlands" .)