A periclinal chimeric albino redwood bigger than the Cotati Tree was discovered by a Sacramento City arborist in 2014. After careful consideration on how to protect the tree, the City finally decided to go public with an announcement on 5/11/16.  Here is a link to the video about the discovery:

Tom & Zane give a campfire talk to park vistors about albino redwoods.

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Cotati Tree Facebook Page