Article: Pebble beach state beach, near Pescadero: rock art.

The big draws at this cove beach along the San Mateo County coast are the rocks. The bluff's golden sandstone has been worn down by water and wind into stunning sculptures and patterns. The beach's rock forms are called tafoni, a Sicilian term. Tafoni is created when water leaves behind mineral deposits that eat away at a rock with an inner layer that is softer than its exterior material.

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