Caves of Phong Nha - Hang Toi (AKA the Dark Cave)

After taking a zip line over the river, we met the entrance to the dark cave. After a short swim, we were in darkness. We continued deep into the cave, with only our head torches for light. Things soon got very tight, trading through gullies knee deep in mud. Then came the 'slides' into mud pools, so it was game over, we were head to toe covered in mud. Afterwards, following the slight glow of daylight, we swam to the exit of the cave and jumped on our kayak to get us back home!