The Grand Sentinels of the Emerald Waters

  Standing tall and majestic on the emerald green waters of Gulf of Tonkin, the lime stone structures offer a spectacular panoramic view. These Karst formations resulting from millions of years of erosion (developed by the repeated regression and transgression of the sea on lime stone during wet and warm tropical climate) stretch over a largeContinue reading “The Grand Sentinels of the Emerald Waters”