Stanza one: The artist and easel (his partner personified as "Bothe straddling precariously.......") are in a dangerous place. "A corner of twisted, climbing mountain track" visualizes a place the painter and the easel must tame, a challenge for them, something they should capture.The artist wish to immortalize the mountains in a painting.Personification adds life to the environment(artist is painting life). the word climbing introduces a sense of progression as the artist prepare to delve into the process of capturing such art.