This is definitely not nature photography of course, but this mine, now a museum, had many buildings above ground and this huge building had about 500 stairs, steep, not all shown here, leading up to the top. No one is allowed to climb these any more, but workers used to do this daily.
Many movies and documentaries have been made here and at the bottom right you can see a film crew working on a new movie.
These butterflies are generally found in Central and South America. Although you can literally see through their wings, the wings are strong.