Trip into lands afar indescribable (6)
I believe the answer is:
safari
'trip' is the definition.
(I have seen 'tropical trip' mean 'safari' so perhaps 'trip' could also mean 'safari')
'into lands afar indescribable' is the wordplay.
'into' indicates a hidden word.
'SAFARI' is hidden in the letters of 'lands afar indescribable'.
(Other definitions for safari that I've seen before include "Overland journey by hunters" , "African hunting expeiditon" , "Overland journey to look for wild animals" , "Animal-viewing trip" , "Big game trip" .)