A large rockfall occurred on AZ Route 77, north of Carrizo Junction in east-central Arizona on Sunday, Sept 28. AZGS's Steve Rauzi happened to be there and captured this picture. The rock in the road appears to be about 4 ft X 4 ft X 4 ft. The total weight is probably on the order of 3,200 pounds.
Steve's image is superposed on a Google Earth image of AZ 77 near where the rockfall occurred.