The natural geotectonic arch known as "El Campanal" or "O Campanal" in Piedrafita de Jaca is a stunning rock formation that stands out in the beautiful Tena Valley of the Spanish Pyrenees. This unique arch, located near the Ibón de Piedrafita and the Betato Forest, offers hikers a moderate but rewarding circular route with breathtaking views. The trail takes you through picturesque landscapes, including the Barranco de Furcos and the Hoya Calatuero, making it a must-visit spot for nature lovers and adventure seekers looking to explore the hidden gems of the Pyrenees.