This photograph is of the same oak tree bark photograph from a few days earlier [Green Springs Ranch (CA), Oak Tree Bark, Detail], but this is a foot to the left. Different sun exposure allows the moss to grown on this section of the tree but not on the other.
EXIF data: Nikon D7000, center-weighted metering mode, ISO100, 38mm, f/8, 1/15 sec
Green Springs Ranch (CA), Oak Tree Bark, Moss, Detail. Green Springs Ranch, El Dorado County, CA. February 04, 2017. © Copyright Steven Tze – all rights reserved.