The low moaning call of a roadrunner can still be herd in the coastal sage and red-tailed hawks and golden eagles still soar over the chaparral covered slopes of the Crafton Hills. Horned lizards scurry along the sandy washes an mule deer graze on the woolly California lilac-the northernmost occurrence of this species.

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The hills provide habitat for over 200 species of plants and animals  including many species that are becoming increasingly scarce as urban growth and development consume the San Bernardino Valley and the rest of Southern California. The Crafton Hills provide important watershed values, protecting the slopes for natural groundwater recharge and benefitting municipal wells in the adjacent communities of Yucaipa and Redlands.