There’s plenty of spots off the main road, but seems like you need to get there early. We showed up around 6 pm. The road does get pretty rough eventually, and we didn’t trust our minivan going through the “unmaintained” section, we turned around and were able to find a connecting side road that had plenty of open space out there. When entering the road initially, the side road would be about half way up to your left. Pretty close to Great Sand Dunes National Park, so we were happy with this location! Nice mountain view.