 Other preserved units that one should not fail to see are the monks kitchen, the refectory and the Cilla.The monastery is located near the Piedra River Canyon, home to many species of birds, damselflies, trout, and endangered fish like the South-west European nase and an endangered species of barbel.The canyon itself includes a network of mossy, garden-like caves (natural and man-made), waterfalls and lagoons that contrast with the otherwise dry hills of southern Aragon.