The project files suggest creation in 2008 after which it was decided to discard the track. Having rediscovered the recordings, it reminds of a focused and inspired period. The beat is actually yours truly "phlegm-beatboxing" just to coin a term. The overall feel should be similar to entrapment in a cold cave, with stalactites spitefully dripping fluids overhead.
Aural weaponry of interest that is evident on this recording: The Electro-Harmonix Frequency Analyzer gets a nice workout acting as the ring modulator on several instruments. Large parts of the percussion are recordings of "phlegmy" mouth sounds.