HDRI or just HDR is a set of techniques that allow a greater dynamic range of luminance between the lightest and darkest areas of an image than current standard digital imaging techniques or photographic methods.
If you want to checkout what is HDR take a look at this article : Introduction to High Dynamic Range Photography.
Here are gathered some of the most beautiful HDR nature photos available online. These images are taken from Deviant Art and are properly linked back, you can click on the image title to reach image source or the photographer’s name to reach his profile.
You might also like to view : Beautiful HDR Tree Photographs
Peaceful Autumn by ~kek19
Water in HDR by ~Juchise
Eye of tomorrow by =zardo
the forgotten by `werol
Storms Comin’ by ~exoart
growing up by *NunAnak
hill by ~secret-luck