Etna, California Etna, California Etna is a city in the Scott Valley area of Siskiyou County, California, United States. The population was 737 at the 2010 census, down from 781 at the 2000 census. Originally named Rough and Ready, it was changed by statute in 1874 to Etna after the local flour mill (spelled Ætna/Aetna after Mount Ætna in Sicily). Etna is located at (41.457350, -122.896875). Etna is in Northern California near the Oregon border, located in Scott Valley near the CDP of Greenview, the city of Fort Jones, and the unincorporated community of Callahan. Etna is located at the foot of
Mount Adolphus Island Mount Adolphus Island Mount Adolphus Island, also called Muri or Mori in the native language, is an island of the Torres Strait Islands archipelago that is located at the very tip of Cape York Peninsula on the northern side of the Adolphus Channel, across from Albany Island and about northeast of Bamaga in the far north region of Queensland, Australia. Mount Adolphus Island is long, and wide at its widest point. It measures in area. It is located from the Australian mainland. The island's highest elevation is the flat-topped Mount Adolphus at the height of above mean sea level. Blackwood