When you die, walk to the right until you see a hole with a wooden arrow sign pointing down that reads "Descend." Jump into the hole and you're in Naraka.
Then keep stamping and squashing grapes until they throw you out! Naraka is named after an ancient Indian asura (or demon) http://en.wikipedia.org/wiki/Narakasura lol apologies for rampant Geekism :)