HomeUSAOregonOregon VolcanoesThree Sisters WildernessSouth SisterNorth Ridge4th3rdtradalpineFA Judge John Waldo, Adolph Dekum, and Edward Humason, September 12, 1883UPDATED BY vietnguyen Tick this climbDescriptionRoutes in South Sister1Old Crater Route3rdTrad · Alpine 2North Ridge4thTrad · Alpine