De Noche/By Night consists of photographs Salzmann made during Easter of 2005, during which he accompanied many thousands of pilgrims on an annual pilgrimage to a high Andean Plateau in Argentina's Juyjuy province.
This series also divides itself into two parts, one representing the ecstasy of the spiritual journey of the pilgrims; the other documenting the more secular activites of the night such as hanging out in a pool hall, embracing one's lover in the shadows or chatting with friends on a street corner before making one's way home.

Take a look at the "De Noche/By Night" book.