Border posts and Gijeong-dong (Propaganda) village with huge DPRK flag, Demilitarised Zone (DMZ), North and South Korea border, Asia

A Fruit Fly Exclusion Zone sign near Yarrawonga, Australia, Pacific

Off-road vehicle in sand dunes above the Orange River, also Oranjemund, Sperrgebiet National Park, also Tsau ǁKhaeb National Park, Namibia, Africa

Thunderstorm over the Orange River, also known as the Orange River, on the border between Namibia and South Africa, Oranjemund, Sperrgebiet National Park, also known as Tsau ǁKhaeb National Park, Namibia, Africa

Thunderstorm over the Orange River, also known as the Orange River, on the border between Namibia and South Africa, Oranjemund, Sperrgebiet National Park, also known as Tsau ǁKhaeb National Park, Namibia, Africa

Orange River, also known as the Orange River, on the border between Namibia and South Africa, sand dunes behind, Oranjemund, Sperrgebiet National Park, also known as Tsau ǁKhaeb National Park, Namibia, Africa