in this poem the audience is shown a jar in the woods. This jar is out of place showing how the narrator feels alone in a crowd, surrounded by unfamiliar things that can change and grow while the jar itself is stuck in its place round on top of the hill.
the placement of the jar is important as well, although in the wilderness of Tennessee is not where one would find a jar, it sits on top of a domain. The hill that is mentioned is no mountain, its not jagged or course. its round and softer like the jar that was placed on it.
the personification of the jar making the wilderness that surrounds it shows the reader that this jar isn't ordinary, if it can create and destroy it gives the jar, the outsider, to change its surroundings giving it human qualities and old testament God qualities.
The wilderness in the poem is said to rise to the jar, making the outside object a high point to be risen to. this references how an outsider in a new place can change not only its surroundings, as said in the second paragraph, but can set a higher standard to the original objects in place on the metaphorical hill.
later in the poem we find that the jar "Takes dominion everywhere". This seems to be a reference to an expanding kingdom, that seeks to controll and conquer.