Killing 16 in the area, the 1872 quake was the largest in California recorded based on historical evidence. The valley shook so violently, it raised a dust cloud that obscured the sun for a few days, it was felt hundreds of miles away and was felt by John Muir in Yosemite. Along the eastern side of the Alabama Hills is a fault scar that show vertical offset of 15 to 20 feet, a magnitude 7.6 to 8 plus.