On the Northern border of Lassen National Park in the Lassen National Forest is the Subway Cave, a remnant of Northern California's volcanic past. This portion of California is part of the Cascade Range of mountains, ancient volcanoes that shaped the geology of the region thousands of years ago, and continue to shape the region even today.
Here's a pop quiz for you: as fast as you can (and without using Google), name the seven wonders of the world. In 2014, chances are that you can't do it, because it's too vague of a question as there are a plethora of lists touting different versions of the many wonders that exist around the planet. Irrespective of what the original seven wonders of the world are; or what the modern seven wonders of the world are; or who voted on the list of the seven wonders, there is only one eighth wonder of the world. That wonder is Burney Falls, located in the Cascade Range in Northern California.