Have you ever wondered how a geologic map is created? This week's #VolcanoWatch article is about the art and science that goes into geologic mapping, particularly on the Island of Hawaiʻi. Read more here: https://t.co/y3gwsepiGj https://t.co/jN64SQO43E USGS Volcanoes🌋 Earthquake Alert on Telegram by @EarthquakeAlertTelegram A @grttme project - Other backups: @Hallotme