In the mountains, Ursula possibly lost her head (5)
I believe the answer is:
urals
I'm afraid I can't even guess how this answer relates to the clue.
Can you help me to learn more?
(Other definitions for urals that I've seen before include "mountain area" , "Russian mountains" , "Mountains of Western Russia" , "Russian mountain range" , "Mountains on the boundary between Europe and Asia" .)