Druid Peak is a 9,577-foot mountain on the southern flank of Yellowstone’s Absaroka Range, just north of where the Lamar River meets Soda Butte Creek at the head of Lamar Valley. Known in Yellowstone’s early exploration by several names, including Soda Hill and Mount Longfellow, it received the name Druid Peak from the Arnold Hague Geological Survey in 1885, possibly because eastern rock formations suggested Stonehenge. The mountain also figures prominently in Yellowstone’s modern wildlife history: wolves released from pens at Rose Creek in January 1995 formed the Rose Creek pack, and a second release on Druid Peak’s slopes in January 1996 created the Druid Pack.