This article sketches the special configuration of the indigenous reservation the Crown granted to the Páez Indians of the town of Toboyma in 1663, and studies the expansion of its boundaries during the 18th century. The work is based mainly on the analysis of colonial documentation, tracing the geographical information implied in it, as well as on the reconstruction of the territorial logics of the Indians, of the authorities, and of other inhabitants. Thus it shows that, in contrast with other native groups dwelling in the New Kingdom of Granada and within the governorship of Popayan, the 18th century constituted a period of strengthening for some Páez reservations, due to the articulation of the Crown’s with native practices of territorial expansion, and to the characteristics of land tenure in the province occupied by the Indians.