In photos: Arab Sheikh in awe of Vietnam’s Phong Nha on return trip
After his February trip to Son Doong, currently the world’s largest cave in the UNESCO-recognized Phong Nha- Ke Bang National Park in central Vietnam’s Quang Binh province, Sheikh Hamad bin Hamdan Al Nahyan, a member of the Abu Dhabi Royal Ruling Family in the United Arab Emirates (UAE), returned to the site along with his family and friends.