I visited in April 2021 to El Pinacate. The Shuck Toak Visitors Center has a lot of good information about the area and it's history. I was the only one there that morning and they started a documentary in English in the theater for me. They informed me the reason the entrance to the loop road to El Pinacate was closed was that a property owner in the area was creating problems. They didn't explain what the problems were but that I wouldn't have been allowed anyway because I was traveling by motorcycle. With that development I chose to hike out to the dunes, the largest in North America. They have you sign a form when you go out and then again when you leave to make sure you made it out. I saw one other person out at the dunes and she was really impressed by them. I hope to have another chance someday to go out to the craters.