I found this website, and it has fantastic photography filling its pages.
This site is about photographing nature from all over the world. It also teaches you about the equipment used to take the pic, and what the picture is all about.
Here is the link to TrekNature. Go to the gallery to see the photos. They also have an excellent forum to discuss them.
This site also has a sister site for other kinds of photography.
Its called TrekLens.