Welcome to Selva de Oza
The top end of the Valle de Hecho is particularly beautiful; the increasingly rutted road runs parallel to the Río Aragón Subordán as it bubbles its way through thick woodlands. Around 7km beyond Siresa, the road squeezes through the Boca del Infierno (Hell's Mouth), emerging about 3km further on in the particularly dense and beautiful forests of the Selva de Oza. From here the road continues another 3km, unpaved, to the junction of valleys and paths known as A Mina, where it meets the GR11 on its way between Zuriza and Candanchú. Several fine day walks start here.