The bulge in the asphalt was about 26 m wide at the uphill edge and encroached 6.1 m into the blacktopped area. At the uphill edge, the blacktop was elevated 1.5 m, while it was displaced horizontally a maximum of 1 m in the middle. The horizontal displacement diminished to zero at the edges of the bulge. The distal edge of the bulging blacktop is not thrust over adjacent, unfailed blacktop but merely elevated vertically. Thus, the direction of displacement at the leading and flanking edges of the deformed blacktop in the toe appears to be nearly vertical upward. Six meters back from the leading edge, motion is 1.5 vertical to 1.0 horizontal.