Twenty Hill Hollow 



ground, each poised and settled daintily into 

 its place at a regular distance from its fellows, 

 making a charming fairy-land of hills, with 

 small, grassy valleys between, each valley hav 

 ing a tiny stream of its own, which leaps and 

 sparkles out into the open hollow, uniting to 

 form Hollow Creek. 



Like all others in the immediate neighbor 

 hood, these twenty hills are composed of strati 

 fied lavas mixed with mountain drift in vary 

 ing proportions. Some strata are almost wholly 

 made up of volcanic matter lava and cinders 

 thoroughly ground and mixed by the waters 

 that deposited them; others are largely com 

 posed of slate and quartz boulders of all de 

 grees of coarseness, forming conglomerates. A 

 few clear, open sections occur, exposing an 

 elaborate history of seas, and glaciers, and vol 

 canic floods chapters of cinders and ashes 

 that picture dark days when these bright 

 snowy mountains were clouded in smoke and 

 rivered and laked with living fire. A fearful 

 age, say mortals, when these Sierras flowed 

 [ 195 1 



