Like Swiss scenery, perhaps, with a large tree (6)
I believe the answer is:
alpine
'like swiss' is the definition.
'alpine' can be an answer for 'swiss' (I've seen this in another clue). I'm unsure of the 'like' bit.
'scenery perhaps with a large tree' is the wordplay.
I cannot really see how this works, but
'a' is within the answer.
'large' could be 'l' (eg in clothes sizes) and 'l' is found in the answer.
'tree' could be 'pine' (pine tree is a kind of tree) and 'pine' is located in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for alpine that I've seen before include "Nepali (anag.)" , "Plant of high mountains" , "To do with great European mountains" , "Relating to high mountains" , "seen in rocky state?" .)