Kelvin-Helmholtz clouds are a rare and often spectacular weather phenomenon whose rolling, wavy appearance can be both beautiful and frightening.

There is nothing like a natural disaster to remind humans how little control we have over the most powerful land, water, fire and weather forces on the planet.

Nature is amazing with the emotions she can invoke, from excitement to relaxation. So kick back and relax with these 26 soothing water on the rocks photos.