Tadlo is a village in Laos.
From Pakse, get a bus to Salavan and asked to be dropped off at the road for Tadlo (30,000 kip). From the drop-off point after the bridge, it's about 2km down a road on the right hand side. There may be a tuk-tuk waiting to take you and the going rate is 5,000 kip/person.
Tadlo is easily navigated on foot.
Tadlo waterfalls. There are 3 waterfalls within 10km of Tadlo. The first is right next to the village, the second is about a 1km walk upstream and the third is about 8km upstream. The second waterfall can be easily found by following the jungle path on the left hand side of the river (facing upstream). You will hear it before you see it, and there is a home-made set of steps to take you down to the bottom of the waterfall where you can swim. You can also hop around the large stones at the top of the waterfall, and even jump off if you have the cahones! (although check the area you're jumping into first!).
Trekking. Treks with guides can be arrange at Tim's Guest House & Restaurant for around 40,000 kip/person. Sites include the surrounding forest and Katu and Alak tribes people, as well as waterfalls.
Elephant Rides. Tadlo Lodge offers elephant treks for 100,000 kip/person. The trek takes around 1 1/2 hours and the elephants are very friendly and timid.
There are a couple of small shops selling the necessities.
Tim's Guest House run's a local computer school and they have good internet access via satellite at 500 kip/minute.
Walk back to the main street in Salavan (or catch a ride from one of the guesthouses). Buses back to Pakse operate a few times a day - ask a guesthouse for times - and cost 25,000 kip. just wait by the side of the road.