Amen Ra (Marin County)
A Light Show from Marin County, California, possibly Muir Beach to be more specific.
It was run by Rick Van Krugal, who I am currently (2021-2022) having trouble getting to respond to messages and Joel Russ (or Joel Bower ?).
In addition to doing Light Shows they also did posters, two of which appear in The Art of Rock
I believe Rick Van Krugal is now located in Canada - Please get in contact if you read this Rick, been trying to reach you for some time.
If you have any information to help me out then please make contact via the link below.
If you can help with more information about this Light Show we would love to hear from you.