Malibu LifeIce AgeBy editorial - September 4, 20140165FacebookTwitterPinterestWhatsApp One explanation for the underwater mesa off the Malibu coast is that the Chumash say at first, people lived in a coastal valley that was flooded out at the end of the last ice age. Share this: Click to share on Facebook (Opens in new window) Facebook Click to share on X (Opens in new window) X Like this:Like Loading...Related