La Sierra de La Cabrera. A day of fog for the whole of central Spain. I wasn't sure when I set out by bus whether a) the bus would actually get to the mountains and b) that I would eventually stick my head up from under the cloud. It worked a treat on both counts and I got some lovely pics, many of them previously shown. 11 years ago but it seems like yesterday, of course!
It was helpful that I already knew all the paths here like the back of my hand!
Underneath the fog here is the Valley of the Lozoya river. Behind me you would have an even bigger sea of fog, with Madrid deeply under it.