Corona Heights Park
Steep red-chert hilltop park with sweeping city views and one of the world's largest exposed fault-polished rock faces.
This guide to Corona Heights Park in San Francisco opens in 1915, when a man named Joseph Lococo climbed this red rock hill to find his old boss over seventeen dollars and fifty cents in unpaid wages. It traces the quarry and brick works that George Gray and his brother Harry ran here since 1899, blasting this outcrop of blood-red chert to sell for the city's cable car beds, brutal work under brutal bosses that had already cost the company its cashier at the hands of another unpaid worker six years earlier. Look for the enormous polished rock face the quarrying left behind, one of the largest exposures of its kind on Earth.
Audio guides are written and narrated by AI.