Visit the Attapeu Province tourist authority in Attapeu city. One of the English-speaking workers can help you get the proper permit required to visit Nong Fa for about 20,000 kip ($2.50) as of November 2009.
Make your way by bus or motorbike to the village of Xesou, 100 kilometers east of Attapeu city along highway 18B toward Vietnam.
Turn left and head north on the wide dirt road just after the milestone marking 12 km to Vietnam. If you are on motorbike, you can re-fuel at the small shop opposite the highway from the road north to Nong Fa.
Cross two rivers that will be difficult with a bike. As of November 2009, the roads over these rivers were not complete. The first, the Xe Sou river, is 8 km from Xesou village. At both, locals running rafts can escort you across for about 10,000 to 30,000 kip.
At km 40, there is a mining village---take the fork to the left here. The guards will not let you enter the mining area and are not likely to be very friendly.
At km 55, you will pass a large pink hotellike government outpost. Stop there to announce your presence, present your permit and possibly arrange a bed for the night for 30,000 kip.
Drive or hike the last five kilometers to Nong Fa.