The keepers can tell you where the land lies (7)
I believe the answer is:
goalies
'the keepers can tell you where' is the definition.
I can't judge whether this definition defines the answer.
'land lies' is the wordplay.
'land' becomes 'goa' (I can't justify this - if you can you should give a lot more credence to this answer).
'goa'+'lies'='GOALIES'
'the' acts as a link.
Can you help me to learn more?
(Other definitions for goalies that I've seen before include "They defend the net" , "Footballers" , "Keepers of nets - so agile" , "defence people" .)