Is able to move and descend mountain (6)
I believe the answer is:
abseil
'descend mountain' is the definition.
I can't judge whether this defines the answer.
'is able to move' is the wordplay.
'to move' is an anagram indicator.
'is'+'able'='isable'
'isable' with letters rearranged gives 'ABSEIL'.
'and' acts as a link.
Can you help me to learn more?
(Other definitions for abseil that I've seen before include "Come down a rock face using ropes" , "let oneself down" , "go down the line" , "Use ropes to climb down a cliff face" , "Descend by rope from helicopter" .)