To play, click on the triangle (the second symbol from the left). To stop play, click on the same symbol again.

Volume can be adjusted by clicking and holding the first symbol on the left.

(9 minutes, 51 seconds)


Music: “Fred Meets Joni,” You Got to Move, by Phil Heywood.


Photos: telescope, North Peak, Sacramento–San Joaquin River Delta, Great Valley Sequence, Geologic Eras (art by Patrick Hamilton), Domengine Sandstone, gomphotherium (art by Carl Buell), John Marsh portrait  (courtesy John Marsh Historic Trust), Rancho Los Meganos (courtesy John Marsh Historic Trust), Devil’s Pulpit.


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