| In a photo taken on Sept. 11, 2019, North Korean students pose for photos in Chonji lake, or 'heaven lake,' as they visit the crater of Mount Paektu, near Samjiyon. Mount Paektu has long been considered the spiritual birthplace of Korea. AFP |
| In a photo taken on Sept. 11, 2019, North Korean students pose for photos in Chonji lake, or 'heaven lake,' as they visit the crater of Mount Paektu, near Samjiyon. AFP |
| In a photo taken on Sept. 11, 2019, North Korean students pose for photos in Chonji lake, or 'heaven lake,' as they visit the crater of Mount Paektu, near Samjiyon. AFP |
| In a photo taken on Sept. 11, 2019, North Korean students pose for photos in Chonji lake, or 'heaven lake,' as they visit the crater of Mount Paektu, near Samjiyon. AFP |
| In a photo taken on Sept. 11, 2019, North Korean students pose for photos as they march to the summit of Mount Paektu, near Samjiyon. AFP |
| A photo taken on Sept. 11, 2019, shows visitors walking towards a cable car station before Chonji lake, or 'heaven lake' in the crater of Mount Paektu, near Samjiyon. AFP |
| A photo taken on Sept. 11, 2019, shows a funicular railway leading to a viewing platform at Mount Paektu, near Samjiyon. AFP |
| In a photo taken on Sept. 11, 2019, North Korean visitors wait to ride a funicular railway to the summit of Mount Paektu, near Samjiyon. AFP |