This live album from 1974 is too often overlooked in favour 1973's Space Ritual (greatest live album of all time imho) but the recording quality is better and it features hidden gems like this monster which was never recorded in the studio and only ever appeared on the b-side to the Psychedelic Warlords single.
https://m.youtube.com/watch?v=lccpRd-Oe8I&pp=ygUVSGF3a3dpbmQgaXQncyBzbyBlYXN5