+**8a** refers to a grade of difficulty in [rock climbing](/wiki/Rock_Climbing), particularly within the French numerical grading system. It signifies a significant challenge, often marking a benchmark for advanced practitioners in [sport climbing](/wiki/Sport_Climbing) and bouldering.
+## See also
+- [Climbing Grades](/wiki/Climbing_Grades)
+- [Bouldering](/wiki/Bouldering)
+- [Difficulty Rating](/wiki/Difficulty_Rating)