We arrived from Aras de Los Olmos direction to the area, and google maps was only showing us one possible route to the observatory. This is a dirt road, but when we visted was in good condition. Our small car was able to go without any issues. However when arrived to the Observatory, we seen an asphalt road. Supposedly only people with authorization are allowed to use it. There was not much to do here, the place was not open to the public, but the view is amazing.