Somehow last year I missed an album by Sherry Finzer - Transcendence - https://heartdancerecords.bandcamp.com/album/transcendence An album of solo flute improvisations recorded in an old water tank in Colorado. It has the same feel as Paul Horn's Inside the Great Pyramid from 1976. As I listened, I wondered if I could collect enough tracks to make a mix of music recorded in water tanks, silos and cisterns. I guess I found enough because here's the mix - Resonant Spaces.
In the comments I'll list each track & where it was recorded. Such as these unique locations - inside a 120-foot water tower, down in a 2 million-gallon concrete cistern, now empty, in the Pacific Northwest, in the King's Chamber inside The Great Pyramid of Gizeh, in the Great Hall at Union Station, Seattle, inside an old military bunker, at The Tank in Rangely, Colorado, and in an abandoned grain storage facility in the port of Montréal.
Tracklist is in comments. And track by track locations in comments as well.