* The repetition of ‘huge’ shows that he is unable to put into words the experience that he had. Wordsworth describes the mountain to be ‘black’, which contrasts from the light imagery that he used previously in the poem, the sharp contrast highlights the dangers of the mountain. The repetition of ‘huge’ also emphasises the sheer size of the mountain, and it also sounds like stuttering, which suggests that he is nervous and intimidated in the face of such raw power.
* The mountain is also personified here, the disturbing image contrasts with the beautiful images of the boat. The mountain seems to be living with intent - wanting to reveal itself. This phrase also suggests the reader can empathise with the speaker’s fear and anxiety, and it juxtaposes to how nature was working with him at first, but now has turned against him. The verbs of growth and weight implies that he feels as if the landscape is growing around him.