Unfinished atlas isn't distorting sunken land (8)
I believe the answer is:
atlantis
'sunken land' is the definition.
The definition suggests a singular noun which matches the answer.
'unfinished atlas isn't distorting' is the wordplay.
'unfinished' means to remove the last letter.
'distorting' indicates an anagram (a warped or distorted version of the letters).
'atlas' with its final letter removed is 'atla'.
'isnt' is an anagram of 'ntis'.
'atla'+'ntis'='ATLANTIS'
Can you help me to learn more?
(Other definitions for atlantis that I've seen before include "Catastrophic scene" , "Legendary 23" , "Fabled lost city" , "Fabled sunken land" , "Fabled sunken realm" .)