Druid Peak (elevation ) is a moderate domed peak on the southern flank of the Absaroka Range in Yellowstone National Park. The peak lies just north of the Lamar River and Soda Butte Creek confluence at the head of the Lamar Valley. Prior to 1885, this summit was named Soda Hill by members of the Hayden Geological Survey of 1878 and Mount Longfellow or Longfellows' Peak by then park superintendent Philetus Norris in 1880. In 1885, members of the Arnold Hague Geological Survey changed the name to Druid Peak for unknown reasons, but some historians believe it may have been the presence of Stonehenge like rock formations on its eastern face that prompted the name.