2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/34407We consider the five-dimensional bulk spacetime with negative Lambda described by the Nariai metric (which is not conformally flat) and match it with a vacuum brane satisfying the proper boundary conditions. It is shown that the brane metric corresponds to a cloud of string dust of constant energy density.4 pages, revtexGeneral Relativity and Quantum Cosmologytext