Herve K
Google
Wonderful area, somewhat alike west USA parks, notably Monument Valley, ah a smaller scale.
There’s a military area in the center of the natural reserve of the White Bardenas; hence forbidden to any visitors.
However, there remain quite a number or district to visit and watch at either nord or south this military district and of course around as it’s surrounded by a gravel track which cycles and cars of any kind may drive.
At lest by dry weather.
I do recommend that wild place!
Check weather forecasts for possible high temperatures in summer, or rain in winter (or fog as I had on a late December day !) especially if you aim to take photos