Viet Nam: beautiful one day, invisible the next. Well, if you head into the hills anyway. The regular reader may recall our experience on the last trip when we summitted the highest point in VN, Mt Fan Xi Pan, where we found ourselves well and truly in the clouds, ensuring the view was John Major grey all around. Today’s adventure was the Sun World Ba Na Hills resort, about 40 minutes out of Da Nang, location of another of Vietnam’s world record cable cars, and the often stunning Golden Bridge. After a decent breakfast at the hotel we summoned a Grab and headed out. Our driver was lovely, warming to…