We’ve done a few of the caving day trips, and in our opinion, this one by Jungle Boss Homestay is the best one available. Taking you to a valley that was once incorporated into the Ho Chi Minh Trail, the guides lead you through jungle, past poison ivy and then into the back entrance of Dark Cave. Here you travel 300m or so into the pitch black cavern, with head torches, safety equipment and guides.
The trip then takes you back through the jungle to E Cave where you have lunch — BBQ cooked over hot stones — before swimming approx. 150m into the depths of the cavern. The cavern is reverberant and it’s quite chilling being submerged in the pitch black, but the water is fresh and cold: the perfect tonic to the tropical heat and sweat of the jungle.