The historical origin of the Kingdom of the Mallos dates back to the time of King Pedro I, who in 1097 bequeathed to his wife Berta, as a wedding gift, a series of territories known as the Kingdom of the Mallos, which included: Agüero, Murillo, Riglos, Marcuello, Ayerbe and on the banks of the Flumen River: Sangarrén and Callén. Thus a small kingdom was created that worked with the same system of tenant Lords as the more significant kingdoms of Aragon and Navarre. On the childless death of Pedro I, those lands remained in the hands of Queen Berta by the grace of the new king, the brother of Pedro, Alfonso I, the Battler. The documents indicate that this Kingdom of the Mallos existed until approximately 1111 after which it is not known whether the queen continued to live in the Aragonese court or if she left for Italy, where she was born.
The local legend of Peter, the Grasshopper, dates back to the Kingdom of the Mallos. Pedro was a boy from Murillo who impressed Queen Berta when he jumped from the top of the Church without hurting himself. So fascinated was Queen Berta by his agility and speed, that she appointed him as her messenger. One day the inhabitants of the different towns of the Kingdom of the Mallos proposed to Pedro that he jump from the top of one of the Mallos, to see if he was able to do it without harming himself. The queen advised Pedro that if he should do it, it should be for a considerable wager. The boy decided to accept the challenge but proposed a series of conditions first. First, people had to stay at least two hundred and fifty meters away. Then, the money from the bet would be given to his family an hour before the event; and finally, they could not get close to him until half an hour after he jumped, in order to give himself time to recover.
The morning of the scheduled day, Pedro the Grasshopper appeared, waving from the top of the Mallo. He waited a few minutes for everyone to properly register his presence and then launched himself into the void. After some bouncing and rolling, Pedro landed on the spot he had planned. He ran to where his wife was waiting for him with two horses, changed his clothes and galloped off in the opposite direction to where the crowd was gathered.
After the agreed time, the crowd approached to see what had happened to Pedro the Grasshopper, expecting to find him dead. But he was not there. Neither dead nor alive. They searched the surrounding area, but of course, he did not appear.
Weeks, months and years passed, but Pedro the Grasshopper was never heard from again. Fortunately, these days nobody jumps from the top of the Mallos, but they are a favourite place for many athletes who see these incredible geological formations as a climber’s paradise.