Reportedly, you can get down from this mountain (3)
I believe the answer is:
ida
'this mountain' is the definition.
(I've seen this before)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for ida that I've seen before include "noted princess" , "Classic mount" , "The girl for Dai" , "Poetic princess" , "Classical mountain" .)