Photo ºÝºÝߣshow of a volunteer trip taken together with Xylem Watermark and ONG Water For People to the Peruvian Highlands in the district of Cajamarca in August 2013. Ruth Pozuelo Martinez volunteers with World Water Corps - Water For People and spend the first week of August in the mountains of Peru mapping and monitoring local water sources and sanitation installations. Often times, projects required long hikes with all of the equipment.