going north

[AlexB]

hello all,

i am planning a trip into the northwest for about 3 weeks. around tucuman, salta, valles calchaquies, quebrada de humahuaca etc. i really want to be off the beaten trail. i'm interested primarily in pueblitos, and speaking only spanish for a while. any suggestions???? i'm open to any and all ideas, but i'm on a serious budget...

thanks!!
alex