The Bridge of Hell Monument · Manzanal de Arriba, La Carballeda, Zamora Image of Manzanal de Arriba, not of the place itself. It crosses the river Manzanas at the bottom of the valley of Santa Cruz de los Cuérragos, beside an old mill; its name alludes to how abrupt the crossing is, in the middle of the natural area of the Sierra de la Culebra. Photo: Antramir (CC BY-SA 3.0) What to see and do in Manzanal de Arriba