Read the free verse poem below. In six to eight sentences, analyze the poem's meaning and describe any literary devices the author uses. "The Light Keeper" by Robert Louis Stevenson

The brilliant kernel of the night,

The flaming lightroom circles me:

I sit within a blaze of light

Held high above the dusky sea.

Far off the surf doth break and roar

Along bleak miles of moonlit shore,

Where through the tides the tumbling wave

Falls in an avalanche of foam

And drives its churned waters home

Up many an undercliff and cave.