
Unsurprisingly, the Organ Pipes in Organ Pipes National Park is known for, well, looking like organ pipes. In fact, they’re even referred to as an “outdoor cathedral.” Over one million years ago, lava from Mt. Holden made its way down to an active volcano plain, which would soon be home to the Organ Pipes. The cooling and cracking of the lava left behind the beautiful 229-foot-tall basalt columns that are there today.

