Thanks for the post. I reached out to the moderation team regarding this image. The primary issues were that it appears to be over-saturated and the contrast is a bit excessive.
In my opinion, the general aesthetics of the image overrule some of the technical issues so I've put the file online. If the color is completely natural then please forgive me in advance. As a photographer myself, I want my images to have some color pop to them but not so much that the saturation appears unnatural. To get that result I use only the vibrance slider in Lightroom and never saturation.
Keep in mind that making photo of the day at Nat Geo or another comparable site or photo contest is an awesome accomplishment. It does not however indicate whether or not the image is a good stock photo. We have to be very careful in what we approve out of responsibility to our customers who have a high level of expectation for technical perfection. It is of course a subjective process and it certainly isn't perfect but you can be assured we are looking very carefully at each file you send.
Cheers!
Mat Hayward