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Dr. Schluss' Garage Of Psychedelic Obscurities on music from Terry Riley's Shri Camel:
"Anthem of the Trinity" and "Across the Lake of the Ancient World" explore similar droning, lower level motifs more like what you'd hear with "In C." "Celestial Valley" and "Desert of Ice" tend to sparkle more and display more sonic relief. The eastern influence is subtle, but you'll hear it in small patches of melody wafting around through the lattuce of keyboard patterns.
The doctor gives it 5 out of 5 on the "Trip-O-Meter."