A photo of Mount Shasta and Lake Shastina, taken by Erich Ziller.  Mount Shasta, or Waka-nunee-Tuki-wuki (Karuk people), is a potentially active stratovolcano located in Siskiyou County in Northern California. It is the second highest peak (4322 m) in the Cascade Mountains. The last known eruption of Mount Shasta was around 1250, based on radiocarbon dating. The first written record of the mountain was made on 20 May 1817 by Narciso  Durán, a member of the  Luis Antonio Argüello expedition into the upper areas of the Sacramento River Valley. Peter Skene Ogden of the Hudson's Bay Company recorded a sighting in 1826, and in 1827 the mountain was given the name Sasty or Sastise. The United States Exploring Expedition named in Mount Shasta in 1841.  The Klamath peoples in the area believe that the mountain is inhabited by the Spirit of the Above-World, Skell, who descended from heaven to the mountain's summit at the request of a Klamath chief. Skell fought with the Spiri...