<http://schema.org/thumbnailUrl>
<https://drscdn.500px.org/photo/11195951/w%3D160_h%3D160_s%3D1/d285bf495ad8ea8c1277c8fee0321dd2>
<https://marketplace.500px.com/photos/11195951/big-sur-photo-trip-2007-200-151285663-o-by-jim-zafrani>