Matt Pike once said "Heavy is about being pissed off and being a warlord, and laying down, like if someone that was in battle, if they had an axe and just chopped some dude in the head and it landed and you have a riff that plays the same way that way...that's heavy." Hung, Drawn and Quartered is that riff.
Coming from their second record, Surrounded By Thieves, the song takes the listener on a familiar ride, yet manages to totally lose them at the same time as the riff drones on and on over Pike's guttural slurring. His voice comes off like Lemmy bellowing through an ashtray, while his vocal chords are simultaneously raked over a bed of hot coals.
As with Sleep, High On Fire make good use of their drummer, driving the song along a crumbling highway of some dystopian wasteland before careening straight off of a cliff as the song comes to a close.
While I am not super keen on recent HoF material, the first couple of records are very good and worth checking out. Also I have included the documentary that Matt Pike is quoted from, it is a very good film which covers the underground hard rock/desert rock/stoner rock scene from the 70's til the time of the films completion.