Phong Nha
It was 'only' a five hour bus ride to Phong Nha, a huge national park in Central Vietnam. It's famous for it's 400+ caves yet only 35% of the actual national park is discovered with the majority of it covered in dense impassable rainforest. Until recently the national park was strictly controlled by...
chalkandchill.travelmap.net/posts/phong-nha