When you are out photographing nature there are times when the dynamic range is far greater than your camera can handle. However, you can take a few images at different exposures and blend them together using Lightroom's HDR feature, and here's how.
This video takes you through how to post process a HDR Panoramic inside Lightroom CC. It does mention how to do it in the field just to give you an idea the next time you're out. Enjoy!