Stock Photo: Worker in a control shaft, portrait, construction of a drain for the sewer system, carried out through voluntary community work, Minga, by members of the community, Santa Marianita de Pingulmi, Canton Cayambe, Pichincha province, Ecuador, South America **. Worker in a control shaft, portrait, construction of a drain for the sewer system, carried out through voluntary community work, Minga, by members of the community, Santa Marianita de Pingulmi, Canton Cayambe, Pichincha province, Ecuador, Sout