How big are “small, medium, and large” boulders, and what is “Sonoma Fieldstone”?
Small boulders are usually about 1 ½’ in diameter, medium are 2′ to 2 ½’ in diameter & large are 2 ½’ to 3′ in diameter. “Sonoma Fieldstone” is a common type of boulder used locally in the Bay Area. It is grey, tan, brown & sometimes a little red in color. It often has moss growing on it. Other types of boulders could be used, but they will be more expensive since most others are not mined locally.