Humberto de Campos is a municipality in the state of Maranhão in the Northeast region of Brazil. It is named after the Brazilian writer Humberto de Campos.
The municipality contains part of the 1,535,310 hectares Upaon-Açu/Miritiba/Alto Preguiças Environmental Protection Area, created in 1992.
Wikipedia https://en.wikipedia.org/wiki/Humberto_de_Campos
Coordinates -2°35'53.816" N -43°27'53.557" E