I donated 3 of my photos to the Art Rangers. They offer the proceeds from the sales of prints of National Park images to the National Parks Foundation to preserve them for everyone to enjoy for generations to come. I think theirs is a worthy cause and wish we would have something similar in Australia too.
Here is the link to their Facebook group: https://www.facebook.com/groups/theartrangers/
These are the photos I donated:
1-Epic Sunset at Kodachrome Basin State Park Panorama – Utah, USA. (The image at the top of the blog)
2-Mountain Range at Zion National Park with cacti in the foreground – Utah, USA.
3-Amazing rock formations at Water Canyon in Utah, USA. It is a natural formation but it looks like a medieval castle.