Provinces of the San Martín region in Peru. By AgainErick (GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)]. Available from Wikimedia Commons.
This map shows the provinces of the San Martín region in Peru. My sister-in-law's mother's side of the family is from Saposoa, which is in the province of Huallaga.