Large cask on brewer's cart, last of many to be ditched in wasteland (6)
I believe the answer is:
tundra
'wasteland' is the definition.
(I've seen this before)
'large cask on brewer's cart last of many to be ditched' is the wordplay.
'large cask' becomes 'tun' (I've seen this before).
'on brewer's cart' becomes 'dr' (I can't justify this - if you can you should believe this answer much more).
'of' becomes 'o'.
'many' becomes 'lots' (I've seen this before).
'to be ditched' suggests deleting specific letters.
'last'+'o'='lasto'
'lasto' with 'lots' removed is 'a'.
'tun'+'dr'+'a'='TUNDRA'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for tundra that I've seen before include "Cold northern region" , "Arctic plain with permafrost" , "Arctic region of permafrost" , "Cold plain" , "Treeless frozen Arctic plain" .)