What are the green dots on this map? Prior knowledge may help, but anyone can solve this by using easily accessible resources.

This is part 18 of the puzzle series Around the World in Many Days. Each part is solvable on its own. Deаr Puzzling, This is an I Have No Idea What I’m Doing crossword. The clues are a mix of 10 standard crossword clues, 11 cryptic clues and 10 printer’s devilry clues, in no particular order. “S...