I climb, I reach
I dig my hands into the cold damp earth
I can't find a way out
So I dig up
It's so dark
I can't breathe
I open my mouth to scream
but my mouth is filled with cold black earth
I twist my body trying to escape
I'm lost in the dark
I'm lost in my grave
Interesting piece of work. Not terribly positive, I have to say. Very depressing and hopeless sounding. Although not terribly creative imagery, it does convey what you're trying to say pretty well. Um, feel better?