At this Place there is a Monument, showing Knight Roland dying and his Horse (Picture, Video and description: http://arte-historia-curiosidades.blogspot.de/2011/08/el-monumento-la-muerte-de-roldan.html)
You may see it @ google Streetmap: https://www.google.de/maps/@43.0089815,-1.3190723,3a,75y,320.08h,82.83t/data=!3m9!1e1!3m7!1sQGavNxZvcUtodHUGLWn8-Q!2e0!7i13312!8i6656!9m2!1b1!2i25

cheers 
Nate