This is an extension of the 4 day trek, aimed at people with previous trekking experience, who like a challenge. The trek passes through a variety of terrain, from farmers’ fields to valleys, jungle and caves. In the caves you will see beautiful stalactites and stalagmites, underground rivers and waterfalls. The scenery inside and outside the caves is spectacular. Stay one night in a local house and experience the culture of the Nguon people. Our porters will prepare camp sites and good food during the trek. Our English speaking guides will provide you with information along the way. This must be the best adventure trek in Vietnam. The tour starts at 08:00am and finishes at 17:00pm at Phong Nha town.