The entirety of SoMa and Mission Bay are liquefaction zones [1], expected to face major damage during the next major earthquake.<p>I wonder if "Drop, Cover, and Hold On" really is good advice for liquefaction zones for a very big earthquake.<p>[1] <a href="https://gis.data.ca.gov/datasets/b70a766a60ad4c0688babdd47497dbad_0/explore?location=37.730815%2C-122.422423%2C13.23" rel="nofollow noreferrer">https://gis.data.ca.gov/datasets/b70a766a60ad4c0688babdd4749...</a>