the current drags me against a wall - sharp rocks cut deeply into my thighs and hips - freezing-cold water numbs the pain - stops the flow of blood - a sudden drop - plummet into a deep pool - down , down , down - held under by force of the falling water - panicking - ca n't find my way up - drowning - if i do n't break free soon , i 'll ... my feet strike a wall and propel me forward - drift slowly up and away from the pool - flow is gentle here - lots of space between water and the top of the tunnel - able to bob along and breathe - air 's cold , and it stings my lungs , but i gulp it down thankfully .