The Carapa engraved rocks are a set of pre-Columbian petroglyphs on the edge of Kourou, classified as a French historical monument since 1993. More than 150 carvings are spread across two large rock surfaces — geometric patterns, anthropomorphic figures, and animal forms whose precise meaning and age remain uncertain, though they are broadly attributed to Amerindian cultures that inhabited this stretch of the Guiana coast before European contact.
The site sits off Rue des Roches Gravées and is free to visit. It lacks the drama of better-known Amerindian rock art sites, but it's close to the adjacent Centre d'Archéologie Amérindienne in the Pariacabo district, which displays artefacts and contextual information about the pre-colonial inhabitants of French Guiana. The combination of site and museum makes for a worthwhile half-morning if you're interested in the history of the territory before the rockets arrived.