MyRubrik

At Vietnamese have greatest cave at world that given by Hang Son Doong's name with the meaning cascade mountains river cave,and this cave is at Phong Nha's National Park Go To Bang Vietnamese. That cave is found first time by named ranger Ho Khanh on year 1991. Why not,its cavity broad up to 150 meters and in height 200 meters.
But none of whom who can research it,since route its heavy trip and tall wind pressure since mark sense underground river that greatly. There is 13 explorers of Vietnamese Science Universities with cruiser English origin,finally they exhibit Caving Expedition on year 2009 by turn in at cave. They while away five days on month of April middle then to survey cave band. By taking in measuring instrument get LaserRase's basis 300,this team can also high measure ceiling and cavity wide at along trip with expectation can make its map. This time its data is still at analisis. But,early reporting result big point out it main cavity reaches doubly cave champion be outgrown this time.(MyRubrik)