Cordillera Apolobamba. To the east of Lake Titicaca not far from Ulla Ulla, Werner Karl, Hans Wimmer, and Hans Richter, of the Berchtesgaden section of the Deutscher Alpenverein, explored and climbed for five weeks in the little-known Cordillera Apolobamba. Their base camp lay north of the Pelechuca Pass, east of the Pupuya group and south of Chaupi Orco. They climbed all the main summits except Palomani. Their ascents included the following: Punta Lisa (17,717 feet), traverse by Karl alone on July 12; Cerro Mita (18,045 feet), traverse on July 13; Cerro Ishkacuchu (18,537 feet), traverse on July 13; Huelacalloc (19,082 feet), north ridge on July 18; Cerro Posnansky (17,979 feet), north ridge by Wimmer and Richter on July 21; Cololo (19,406 feet), south face, east ridge, north face, west ridge, and south face on July 23; Chaupi Orco (19,830 feet), a 17 hour climb from the northeast on August 1; Cerro Nubi (18,734 feet), traverse on August 6; Huanacuni (19,023 feet), west ridge on August 6. They later made the ascent on the same day of three 19,000-foot peaks in the Cordillera Real near Illimani.