16th Annual Smithsonian Magazine Photo Contest Natural World
A black swallowtail caterpillar near Fairy Falls in Yellowstone National Park

Papilio polyxenes perched on an Angelica pinnata with Fairy Falls in the background

Photo Detail
Date Taken: 07.2018
Date Uploaded: 09.2018
Photo Location: Yellowstone National Park, Wyoming, United States of America
Camera: iPhone 6
Copyright: © Anne Holliday