Globe Unity 67 by Globe Unity Orchestra
and
European Echoes by Manfred Schoof
Both are extremely dense and as dense as I've heard free jazz wise.
European Echoes is awesome.
I recommend Milford Graves "Bäbi" and "Nommo" too. No sax skronk but great albums. Bäbi was recently re-issued on cd, Nommo is damn hard to find & expensive.
Saw brotzmann play a trio set w milford graves and william parker in 2000 or 2001. To this day probably the best musical experience of my life. Graves wasn't even using drumsticks most of the time. I remember reading somewhere that graves used to jam w hendrix back in the day...it's a nice thought to consider there may be tapes buried somewhere.