The whole area is underlain by Franciscan chert bedrock, and a large percentage of the hill is barren.

The park is home to native reptiles, including northern and southern alligator lizards and garter snakes.

Butterflies like the anise swallowtail, red admiral and cabbage white can be seen flying in the park.

California scrub jays, mourning doves, downy woodpeckers, chestnut-backed chickadees, pygmy nuthatches, bushtits, American robins, California towhees, white-crowned sparrows, dark-eyed juncos, American goldfinches, and house finches nest in or near the park.

[4] Corona Heights is prominently featured in the 1977 horror novel "Our Lady of Darkness" by Fritz Leiber.