What is another word for climbing upon?
Pronunciation: [klˈa͡ɪmɪŋ əpˌɒn] (IPA) 
The phrase "climbing upon" can be substituted with a number of synonyms including ascending, scaling, mounting, reaching, ascending, clambering, scrambling, and scaling. Each of these words implies the physical act of moving upward, often with some effort. "Ascending" and "scaling" suggest a deliberate and controlled ascent, while "mounting" and "reaching" indicate that the climber has successfully reached a higher point. "Clambering" and "scrambling" imply a more chaotic and unorganized climb, often involving the use of hands and feet to make upward progress. No matter which synonym is used, the idea of upward movement is clear.
