From an AP story March, 2010. Notice bold, "allow access", which implies there is not access now.
Have you ever been there?
I’ve been twice. I go to St. George, UT, which is nearby, every February and have been to the site twice. Once before reading about it and once after.
Neither time was I denied access. Nobody asked me if I belonged. I drove up, hiked around and enjoyed my visit, just like many other historical landmarks around the country.
Maybe I just happened to go on days when Porter Rockwell was on vacation.