National Parks Rules/ Policy related

What is the name of your state?I work out of Colorado. This is a unique question but I do need to know where to go to research this issue.

I am a fine arts photographer who is working on a project that would involve photographing artistic nudes in specific national parks. I was told, somewhat unofficially, that nudity is not expressly outlawed in our national parks system. I do need better and more reliable assurance of this. I have searched the websites of a few national parks but was unable to find anything addressing this issue (no surprise).

I am also assuming that because the national parks system is a public place, as compared to privately owned, I would not need any special permission to use images taken there for my own commercial purposes. Please comment.

Overall, I would like information as to where I can go to research these issues.

Thank you in advance for any help!

Whomever told you it is not illegal is an idiot. Of course, you could call the U.S. Parks Service for their opinion. I'm sure you would get an earfull.