Ha Long bay was the next visit. The bay is made of 2000 bizarrely shaped limestone rocks....so beautiful. We stayed overnight on a pirate looking ship and had our own wooden cabin with aircon and shower/toilet....I was very impressed ! We went to a huge echoing cave...the larges we have ever seen and did another 15 km trek through a jungle mountain. We saw amazing colourful red crabs that lives inland and huge spiders...not for the faint hearted. We travelled back to Hanoi, did some more shopping and left for a new country Laos , but that is another story to be told !