Woman walking across rice terrace, Yen Bai, Vietnam

Woman walking across rice terrace, Yen Bai, Vietnam

Wörlitzer Park, Wörlitz, Germany

Wörlitzer Park, Wörlitz, Germany

Writing on Stone Provincial Park, Milk River Valley, Alberta, Canada

Writing on Stone Provincial Park, Milk River Valley, Alberta, Canada

Yak bells for sale in Namche Bazaar, Nepal

Yak bells for sale in Namche Bazaar, Nepal

Yampa River flowing through Dinosaur National Monument, Colorado

Yampa River flowing through Dinosaur National Monument, Colorado