Historical reference: Do not rely on this information. It is very old. About this collection
Jorullo, Juruyo, or Xurullo, a volcanic mountain in Mexico, 75 miles S.S.W. from Valladolid and 80 miles from the Pacific coast. It was suddenly upheaved on September 28-9,1759, in the midst of a fertile plain, the disturbance extending over an area of 4 miles by 3 miles, and the central crater having an elevation of 4,265 feet above sea level. Since that date there has been little sign of activity, and the flanks are covered with forests.