You are correct! Canyons are not typically shown on a standard map of California.

Here's why:

* Valleys: California has many large and well-defined valleys like the San Fernando Valley, the Central Valley, and Death Valley. These are easily identifiable and often marked on maps.

* Mountains: California has extensive mountain ranges like the Sierra Nevada and the Coast Ranges. These are also clearly visible and highlighted on maps.

* Canyons: While California has many canyons, they are often smaller in scale compared to the major valleys and mountain ranges. It's difficult to show every canyon on a standard map without overwhelming it.

Let me know if you have any other geography questions!