The week's best photo of Vietnam

Hashtag #Vietnam: The week's best photos
Here are 15 of the most memorable snapshots on Instagram that you should not miss

Tourists camp inside En Cave at the protected Phong Nha-Ke Bang National Park in central Vietnam. The 1.6-kilometer cave is a feeder to the world's largest cave Son Doong and is itself one of the most captivating caves on earth.

Cham towers built between the 13th and 15th centuries are among the most popular attractions in the  central coastal town of Quy Nhon. Earlier this year the town was listed by UK travel publisher Rough Guides as one of the nine best undiscovered places in Southeast Asia.

A street graffiti in Ho Chi Minh City.

A quiet, surreal moment under Long Bien Bridge in bustling Hanoi downtown.

Hanoi traffic: Beauty in the chaos?

A man rides his elephant across a lake in Vietnam's Central Highlands.

Vietnamese conical leaf hats are made into wall lanterns in Phu Quoc.

A tea farmer in Vietnam's Central Highlands.

Tourists walk inside one of the limestone caves surrounding Ha Long Bay.

A woman sells banh mi baguette on a street in southern Vietnam.

A 200-year-old gate to the botanical garden of Vietnam's former citadel in Hue.

A buffalo auction at Can Cau, the largest cattle market in Vietnam’s northwestern region with hundreds of buffalo and cows put up for sale. The market meets every Saturday on a hill around 115 kilometers from Sa Pa. One can take an overnight train from Hanoi and another three-hour bus ride to the market.

A photo by Truong Huu Hung shows fishers casting their nets on a river

Star anise pods are grilled before being added to a pot of Vietnamese famous noodle soup pho.

A speedboat leaves a white tail around Ha Long Bay.