Doods and I visited Vietnam last July 2009. One of the highlights of the trip was a cruise in Halong Bay. The cruise was reasonably priced at only $40. per head including lunch (cool huh). There was a three-hour drive to get to the port, so our tour guide picked us up real early at 8AM (yikes!) The $40-cruise includes a lot of fun activities. There's kayaking, lunch with fresh catch-of-the-day seafood, then we stopped by to explore one of the biggest caves in the island.
Halong Bay is made up of 1,967 islands of different sizes. There are two types of islands, limestone and schist, which are concentrated on two main zones: The southeast (Bai Tu Long Bay) and the southwest (Halong Bay).
Halong Bay is world famous for it's spectacular scenery of grottoes and caves. The central zone of Halong Bay has been named a UNESCO World Heritage Site.