Phu Hin Boun National Protected Area covers the limestone karst highlands north of Thakhek, encompassing the Kong Lor cave system and the surrounding forest. It is one of the larger protected areas in Laos and contains significant biodiversity, though the large mammals that might once have inhabited it have been heavily poached. The scenery is the primary draw: sheer karst towers, sinkholes, caves, and forest.
Rock climbers visit the park for the limestone faces, with routes established by international climbers on walls above the Nam Hin Bun River. The village of Ban Kong Lor near the cave entrance is the main base for exploration. Trekking in the park beyond the immediate cave area requires a guide and can be arranged through guesthouses in the village or in Thakhek. Kayaking on the rivers within the park is possible in the wet season.