The loop trail takes you to Piatra lui Lucaci (Lucaci's Rock). The starting point is from Tarnita dam, on the road on its northern side, together with trail 19 (blue stripe). Walk past the mountain rescue base opposite the climbing wall and continue in a gentle ascent along the holiday houses. When you get to a big rock at the side of the road, at a bend to the right, trail 19 continues along the lake shore toward the tail of the lake. This is your return route. Now, continue on the forest road to a loading platform where you cross the valley to the left and follow a logging road on the opposite slope. Climb on the winding road through the forest, past several fallen trees that do not cause special problems. After about an hour, reach a secondary ridge and an intersection. Continue on the road to the right and at the next junction walk straight ahead (a road comes from behind-right). Turn right at the third junction and continue between birch trees to the main ridge, where you find a clear road. Turn left and follow the road over a peak and then descend through the forest to a hunting observatory. The road becomes narrow and turns into a path. Walk along the ridge, descending to Lucaci's Rock. Enjoy the spectacular view of the lake, then return to the path on the ridge and descend to the south-southeast towards Tarnita Lake. Although the route is not marked, it is not difficult to follow if you continue along the ridge that descends directly to the lake. After 30 minutes, reach the lake next to a bee hut. From here, your route is again common to that of trail 19. From the bee hut, walking direction changes to the north-northeast. Follow the well-defined path, but when you get next to a metal pontoon that is half sank, be careful to follow the markings that leave the path to the right and climb steeply to the left. The lake shore is steep, with gullies that require attention as the path is very narrow or even absent, with risk of slipping into the water, especially when it rains. After about 500 m, reach a rock formation with several red dot markings. There used to be a trail that climbed from here to Lucaci's Rock, but it has been affected by windfalls and it is no longer passable, also as a result of the fact that the steep path was washed by water. From the rock formation, descend to the lake past three scree slopes and continue along the lake shore, being careful when crossing the gullies. After nearly 2 hours from departure, reach a stream, cross it and get to a resting place. From here, the winding trail climbs steeply to a big cliff (which you have passed at the beginning of the trail) on a forest road that you follow to the right. Get back to the dam on the same route that you climbed on right after departure.