Burning land (6)
I believe the answer is:
alight
I believe this is a double definition.
'burning' is the first definition.
(set alight)
'land' is the second definition.
(I know that alight is a kind of land)
(Other definitions for alight that I've seen before include "Descend, from a bus or train say" , "Get off the bus because it's on fire" , "staying in?" , "Ignited; get off" , "Burning; descend" .)