Start by the Penserjoch pass and along trail 14B along the crest, over the Astberg summit and further on 14A to the junction to the Tatschspitze summit. Stay on trail 14A and follow the ascent to the Puntleider joke (2465m). Steep descent to the lake (1850m). Along trail 14 to the Puntleidersee pasture and descent to valley to the Le Cave/Grasstein hamlet (return with bus 310 to Vipiteno/Sterzing).