Ser Andino is another well-respected travel agency located in the vicinity of San Salvador de Jujuy (it's actually in the nearby town of Humahuaca). The bilingual guides know their stuff and are well-schooled in regular excursions to destinations such as Salinas Grandes, Iruya and Laguna de Pozuelos.
Jujuy 21 (Humahuaca)
Humahuaca , Argentina
Spanish, English, Portuguese
Phone: 0388 742 1659
E-mail: serandinotravesias(at) yahoo.com.ar