Rio Grande do Piauí is a municipality of Piauí.
Boundaries: Instituto Brasileiro de Geografia e Estatística (IBGE), OCHA ROLAC (https://data.humdata.org/dataset/brazil-administrative-level-0-boundaries) via geoBoundaries, CC BY 3.0 IGO (https://creativecommons.org/licenses/by/3.0/igo/); boundaries modified
Nothing has been written about Rio Grande do Piauí here, and neither Wikipedia nor Wikivoyage has an article we could draw one from. If you know the place, that makes you a better source than anything we have. Tell us what is worth knowing and where you got it.
We show Rio Grande do Piauí as the capital of Rio Grande do Piauí. If that is wrong, tell us what it should be and where you read it.
Sign in to send a correction for Rio Grande do Piauí, so a moderator can follow up with you.