Kelso Dunes
This is the Kelso dunes. A 600' tall, miles in extent system of sand dunes, just a few hours away from LA. They're just one of 30 dunes in the world that make a 'booming' noise when the sand is disturbed. I went camping there last weekend, and it was 12 times more fun than anything else I could've done.
There are wonders all around us, go out and find them.