Secret volcano hidden next to popular SoCal hiking trail — and you can even see it

Source: New York Post

There’s a hidden hiking spot next to a popular SoCal hiking trail in San Diego that most people walk right past without knowing it’s actually an ancient volcano. Mount Calavera—found in the Calavera Nature Preserve in Carlsbad—might seem like an ordinary hill, but it was formed by powerful geologic forces millions of years ago, according to NBC San Diego. 3 Mount Calavera—found in the Calavera Nature Preserve in Carlsbad—might seem like an ordinary hill, but it was formed by powerful geologic forces millions of years ago.