Visiting a river in East Anglia with a large dry patch (7)
I believe the answer is:
atacama
'a large dry patch' is the definition.
I know nothing about this answer so I can't tell whether this works.
'visiting a river in east anglia' is the wordplay.
'visiting' becomes 'at'.
'river' becomes 'cam' (river in Cambridge, England).
'in east anglia' becomes 'a' (I can't justify this - if you can you should believe this answer much more).
'at'+'a'+'cam'+'a'='ATACAMA'
'with' acts as a link.
Can you help me to learn more?
(Other definitions for atacama that I've seen before include "lot of empty space" , "South American desert" , "Chilean desert" .)