Turn left at Land’s End, and there’s a sort of mine (4)
I believe the answer is:
gold
'mine' is the definition.
(thesaurus)
'turn left at land's end and' is the wordplay.
'turn' says the letters should be written backwards.
'left at land's' becomes 'log' (I can't explain this - if you can you should believe this answer much more).
'end' says to take the final letters.
The last letter of 'and' is 'd'.
'log' in reverse letter order is 'gol'.
'gol'+'d'='GOLD'
'there's a sort of' is the link.
This may not be right. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for gold that I've seen before include "Mine produces this" , "Element (Au)" , "Au - metal" , "Deep yellow" , "Tokens of marriage" .)