I read recently in Sunset magazine that Catalina "is, in fact, a mountain, and would be the highest in California if three-fourths of it weren't beneath the sea." Through subduction, volcanic activity, and millions of years of metamorphism, this great island was formed. Nature works slowly, and we only see a mere glimpse of its record.
Los Angeles Times: Breaking News: "'Looks like a volcano'
Dozens of people watched the fire from the top of Signal Hill, 26 miles away. Even from that vantage point, the wall of flames on the islands were clearly seen.
'It looks like a volcano erupting,' said Kevin Lembke of Long Beach."