Various features impress a person contemplating this scene.
The horizontal line is an old watercourse dug in the 1850s by hand on very steep slopes. It carried water from a spring among those rock cliffs; carried many miles through the mountains holding a slight gradient to maintain elevation.
The water was used in water cannons further west to wash away mountains in order to access the gold in them. This form of mining was halted in the later nineteenth century to protect the farmland and the fishing resources in the Sacramento Valley.
The bare hillside seen here is due to wildfires--this one caused back in the 1980s by lightening (if I recall my data correctly).
The white spot in the upper right is the last bit of winter's snow about to be melted.
In the distance, the white flanks of hills are due to decomposed granite sliding away a little bit each year. Very difficult for vegetation to become established in "soil" with such marginal nutrients and ground that is gradually, but constantly, moving and shifting.
Tough country this is with freezing cold drought conditions half the year and then burning hot drought conditions in the summer. However, the pines and firs know how to take advantage of a month or so of available moisture.
When the people leave their fires back at home, the forest does produce some fine trees.
The elevation of the tops of these ridges is not extremely high--ranging from some 6000 feet to around 8000 feet (about 1800 meters to about 2400 meters).
I really enjoyed this photography session with the storm moving above and around me, but got the blithering beejeebees scared out of me when a lightning bolt blew the sky apart over my head!
Angky.