This photograph depicts a cave opening surrounded by jagged hillside rocks. Two people are visible at a distance, seated at the opening of the cave. One of the people appears to be a child. "Brewster Ventura, Cal." is embossed on the brown cardstock…
View of cave paintings drawn by the Chumash on a cave wall in the Santa Susana mountains. There appears to be a measuring stick attached to the cave wall.
Landscape view of Tres Bocas Cave opening located on a beach on Santa Cruz Island looking outward toward ocean water. Unknown man located in the center of the postcard leaning on cave opening next to a wooden crate.
Photograph taken from inside Valdez Cave on Santa Cruz Island, titled "Beautiful California Valdez Cave, Santa Cruz, Island." A cliff side of Santa Cruz Island is visible, along with two boats and a person standing on the rocks.
[Pacific Novelty…