This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
FMIB Untreated square Oregon fir timber San Franciasco Pier November Radial surface showing erosion by Limnoria between.jpeg check categories September Untreated square Oregon fir timber San Franciasco Pier November Radial surface showing erosion by Limnoria between the harder part of the annual rings Subject Piling Civil