Explication -- "Through the Wood"

Write an explication of Tomas Transtromer's "Through the Wood."  

N.B. The Internet will not be of much help to you for this.

Be sure to specifically comment on the diction, imagery and atmosphere in the poem.

Through the Wood

A place called Jacob’s Marsh

is the summer day’s cellar

where the light sours to a drink

tasting of old age and slums.

The feeble giants stand entangled                                5

closely—so nothing can fall.

The cracked birch molders there

in an upright position like a dogma.

From the bottom of the wood I rise.

It grows light between the trunks.                                10

It is raining over my roofs.

I am a waterspout for impressions.

At the edge of the wood the air is warm.

Great spruce, turned away and dark

whose muzzle hidden in the earth’s mold                   15

drinks the shadow of a flower.

                                                Tomas Tranströmer, 1962

Submit your explication before class begins.