Terrace Hill in San Luis Obispo, California, is one of the SLO County morros. Here’s why it’s flat on top and not pointed like other hills like Bishop Peak and Cerro San Luis, also known as ...

Developers wanted to build houses, later gravel miners dug away 60 feet of the San Luis Obispo volcanic plug known as Terrace Hill. See rare images of the hilltop before it was flattened.