A perfect entry level trek that after trekking through Phong Nha national park will bring you to the 300 meter long and 60 meter high elephant cave. Swim deep into this incredible cave while a local guide tells you about its fascinating war history. Following this, go deeper into the valley until you see the crystal clear waters of Ma Da lake and paddle in its deep blue waters. After a brief jungle lunch bbq, hike to the the magnificent tra ang cave. It’s a bumper day of stunning natural beauty for people of all fitness levels.