Son Doong Cave in Quang Binh province, Vietnam

1. Zhangye Danxia landform in Gansu, China

2. The swing at the “End of the World” in Baños, Ecuador

3. The Hang Son Doong cave in Quang Binh Province, Vietnam

4. Hitachi Seaside Park in Hitachinaka, Ibaraki, Japan

5. Mendenhall Ice Caves of Juneau in Alaska, United States

6. Mount Roraima in Venezuela, Brazil, and Guyana

7. Sea of Stars on Vaadhoo Island in the Maldives

8. Tunnel of Love in Klevan, Ukraine

9. Salar De Uyuni in the Potosí and Oruro departments of southwest Bolivia

10. Glowworm Caves in Waitomo, New Zealand

Son Doong is the world’s largest cave, created 2–5 million years ago. A half-mile block of 40-story buildings could fit inside it!

Reported by Dan Tri
(www.quangbinh.gov.vn)