Calavera Lake's Cave, Volcano & Labyrinths
bet this may come as a surprise to many, but San Diego has it's own
volcano that was active 15 million years ago! But that is not all.
This area also boasts a lake and dam dating back to the World War II
era, multiple stone labyrinths and even a cave!
Calavera Lake, meaning 'skull' in Spanish, offers 110 acres and over 4
miles of hiking and bike trails. The reservoir is 400 acres and
managed by the Carlsbad Municipal Water District. The entire area is
habitat to an identified 115 plant, 49 bird, 10 mammal and 7
amphibian/reptile species. Of these identified species, 6 are classified
as threatened or endangered. Among the area's endangered species are
the Thread-leaved Brodiaea, Orange-throated Whiptail and the California
Gnatcatcher. The California Gnatcatcher is perhaps the most threatened
of these species because 85% of it's natural habitat, the Diegan Coastal
Sage Scrub, has been destroyed by development.
Cave & Volcano:
As for the cave.....well, it turns out that it's actually an old
exploratory mine, known as an "adit". This adit was mainly used as a
rock quarry for valuable minerals. The Calavera Hills contains a
volcanic plug which is found throughout North County San Diego. The
plug contains a fine-grain basalt which actually clogged the volcano's
throat millions of years ago. After its last eruption, the cone slowly
eroded, leaving only the plug. For almost 25 years, miners used the plug to mine gravel, speeding up the erosion process.
being radiometrically dated, the volcanic plugs are thought to have
formed in the Miocane, when our coastline was transitioning from a
convergent plate boundary to a transform plate motion. This transform
motion is what eventually formed the San Andreas fault.
Although fishing is allowed here, from what I am gathering on the
internet, it is not an ideal fishing spot due to lack of permitted
fishing areas. Here's a good site to see what fish you can catch here: http://www.fishingnotes.com/fishing-report/ca/Calavera-Lake
Labyrinth: Coordinates: 33.168833, -117.284051 Before heading out here, take a good look at Google Maps on satellite to see where the labyrinths are. There are 3 that we know of although there may be more on top of the mountain. Who created them is a mystery to us at this point.
And what appears to be a collapsed road:
Cool spot for skateboarders:
Found it! I wonder what's inside?
The cave could probably fit maybe 8 or 9 people inside I'm guessing:
The natural patterns inside are so beautiful:
There's a great view up here! Hopefully this view will not be destroyed in the future by new homes and shopping centers:
Let's head down:
This is the volcano in all its glory:
Anza Borrego Desert
Cuyamaca State Park