Final answer:
The given passage is an example of imagery and hyperbole, illustrating the man's extraordinary speed in a visually descriptive and exaggerated manner.
Step-by-step explanation:
The passage "I suddenly beheld the figure of a man, at some distance, advancing towards me with superhuman speed. He bounded over crevices in the ice" exemplifies the use of imagery and hyperbole. Imagery is a literary device that employs visually descriptive language to help the reader visualize the action in their mind. In this case, the description helps the reader imagine the man moving with exceptional speed. Hyperbole, on the other hand, is an exaggerated statement not meant to be taken literally, emphasizing the astonishing speed of the figure mentioned.