Trail of a Marronda - Alto Eo Activity · Baleira, Fonsagrada, Lugo Image of Baleira, not of the place itself. A waymarked trail, the PR-G 145, of a little over twenty-one kilometres on a circular course, crossing the beech wood of A Marronda and the headwaters of the Eo inside the Eo, Oscos e Terras de Burón Biosphere Reserve. Photo: Elisardojm (CC BY-SA 4.0) What to see and do in Baleira