<http://schema.org/keywords>
"blue, colorful, crater, green, iceland, island, kerid, lake, orange, purple, red, yellow"^^<http://www.w3.org/2001/XMLSchema#string>
<https://marketplace.500px.com/photos/5718574/crater-lake-kerid-by-jan-mi%25C5%2599ack%25C3%25BD>