+"9a" represents a highly challenging [Climbing](/wiki/Climbing) grade, particularly in [Sport Climbing](/wiki/Sport_Climbing). It signifies a pinnacle of physical and mental demand, attempted only by elite athletes.
+## See also
+- [Free Climbing](/wiki/Free_Climbing)
+- [Bouldering](/wiki/Bouldering)
+- [Grading System](/wiki/Grading_System)
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