My thanks! Wow! Asuming the risk of loosing the very essence of this sketch I´ll try to make a more serius version and dedicate it to you. I´m really grateful, this reply was some kind of morale booster to me.
It's a dude. Chained to a rock... In some sort of Cell containing more similar sized boulders. If you're looking for a deeper meaning then, I don't know, maybe it symbolizes that there is no light at the end of the tunnel, or something.