106 REPORT OF THE CALIFORNIA EARTHQUAKE COMMISSION. 
are 2-strand barbed wire. ‘This belt of cracks continues for about 300 yards along the 
road. Near Woodside there was a 2-inch crack trending northwest-southeast, with an 
upthrust of about 2 inches on the northeast side. A crack 1.5 feet wide in places runs 
N. 23° W. across the road, entering Woodside village from the southwest, just west of 
the bridge, and in places shows an upthrust of about 2 feet on the northeast side. A 
small tree on this crack was uprooted in the western part of the village. On the 
King’s Mountain road, southeast of Woodside, a large crack of the main fault-trace 
crost the road, and the fences on both sides were pulled apart. (See plate 628.) No 
vertical throw was observable. About 200 feet west of the fault fracture were several 
smaller cracks parallel to it. 
Further southeast, down the road toward Portola, the main fault-trace crosses the 
road just north of the creek and within 12 feet of a giant redwood. The ground was 
raised and crumpled across the road, and the cracks extend both up and down the stream 
from this place. In a cluster of young redwoods southeast of this road a board fence is 
bent out of line, and huge cracks opened among the roots of the trees. A wire fence was 
pulled in two and one of the posts split. In this cluster of trees the fault past thru and 
split a big redwood stump. 
Two fences crossing the crack at right angles near 12 (map 22) had been thrown out 
of line, their northeast portions being moved southeast relative to their southwest por- 
tions. They had been given an offset of 8.5 and 8 feet respectively. (Plate 638.) A 
large oak tree standing on the crack was uprooted, while branches were snapt on a big 
white oak tree just south of the fault line. 
Northwest of Searsville Lake, about a mile, there is a belt of cracked ground 7 or 8 
feet wide, one crack being 1 foot in width. The apparent upthrust was in some places 
2 feet on the northeast side. At other places there is no change of level. On the Portola 
road, just southwest of the Searsville Lake, parallel cracks with a trend N. 43° W., some 
of them 1.5 feet wide, were formed across the road and extended into the marsh to the 
northwest and into the woods on the southeast. Where they crost the road, the fence 
boards were broken and the earth shoved up in ridges; the northeast side of the crack 
moved southeastward. 
The main fault fracture passes thru the Portola Valley and crosses the public road in 
front of a small 1-story house southeast of the village store. Where the fault crosses 
the road, the fences on both sides were torn in two, and in the prune orchard south of the 
road the rows of trees were displaced in some instances about 2 feet. The cracks in the 
road were about 6 inches wide, approximately parallel, and running nearly north-south, 
while the direction of the fault line itself was about northwest-southeast. 
About a mile beyond Portola, a crack, measuring 2.5 feet in width in some places, crost 
a field, the cracked ground spreading out for 10 feet at intervals. Wooden fences cross- 
ing it were broken, water pipes bent and pushed up to the surface of the ground, and a 
dead tree near the line of the crack was thrown down. There was an apparent upthrust 
of about 2 feet on its northeast side. 
Road from Judge Allen’s southward. — Between 3 and 4 miles southeast of Portola, 
many cracks were visible extending in all directions. Several showed an uplift on the 
east or northeast side, which is also the,downhill side. Some cracks were from 4 to 5 
inches wide, and had a vertical throw of nearly a foot. In other places the downhill 
side had been thrust upward, and pieces of the crust shoved as much as 4 inches over 
the uphill side. Near the top of the ridge, just before reaching the point where the trail 
branches off, a 4-inch crack running 8. 63° E. showed a 4-inch upthrow on the northeast 
(downhill) side. Southwest of the ridge and about 100 feet below the trail, an old land- 
slide dating back to some time within the past year, covers about 2 acres. Around this 
slide the ground appeared to have been much cracked recently. 
