The floating logs on Spirit Lake from the 1980 eruption of Mount St. Helens are briefly described. Over the years, some sank vertically to the bottom while heavy sedimentation occurred. This provides an analog for the Yellowstone fossil “forests” that has caused some who claimed to be Christians to become agnostics or atheists, such as Ronald Numbers. It also can explain vertical petrified trees at many other locations. The log mat on Spirit Lake provides an analog for log mats formed during the Flood.