Everything from a slanted cliff comes down or slides down
This is a metaphor. unlike a simile, for example, Brave as a fox comma it does not use like or as. the definition of a metaphor is, a figure of speech in which a word or phrase is applied to an object or action to which it is not literally applicable
In book 9 of the Odyssey, Odysseus is too proud to hear his men´s pieces of advise .The men, when visiting the Cyclopes´island, want to find food and leave. They go to the cave where the Cyclop was supposed to be, as he was not there , the men want to flee.However ,Odysseus chooses not to listen to them and when the Cyclop comes back to his place he loses six of his men.
Your were right, it is the first one.