This big six foot diameter coquina sphere in St. Augustine, sits beside A1A near the visitor center. Perhaps you’ve seen it and wondered “What’s that big stone ball?” It’s the Zero Milestone that was placed here in 1929 to mark the eastern end of the Old Spanish Trail that ran from St. Augustine all the way to the Pacific where it terminated at San Diego, California. The trail was the first transcontinental route from ocean to ocean.
science to the paranormal
