The Castrola cave owes its name to the bandit Isidoro Juárez Navarro. Son of Castor (hence the nickname Castrola) and Ascensión, he was born on April 5, 1851 in Villarrubia de los Ojos. He began his misdeeds at the age of 19 by stealing oil from a mill, being convicted along with other companions and sentenced to 2 years and 4 months in prison, which he served in the Alcalá de Henares prison. Meanwhile, he had to complete his military service, but since he was imprisoned, he had to enter the exit. He claimed to be the son of a poor and sick father whom he had to support. But they didn't listen to him and sent him to Africa. But he tried to flee, ending the event with Isidoro's bones in the dungeon. But when he leaves and is waiting to leave for Ceuta, his father helps him escape, walking through the fields, occupying the cave that bears his name, in the municipality of Madridejos, about 12 km from his hometown.
The father, a member of the anti-faction militias (that's what groups of armed civilians against bandits were called), the phrase he repeats most often is "You're not a man if you don't throw yourself into the mountains." Thus, on August 6, 1873, the legend of the bandit "Castrola" begins; who occupied the cave for eight years, and they say that he left a treasure hidden in the surroundings.
He died in 1881, in the town of Urda, in the place called El Puerto de la Gineta, next to the Cañada Real Soriana and very close to the La Galana valley. 8 km away in a straight line to the cave.
This bandit was described as the "most terrible vermin of the Montes de Toledo"; and it was said that he instilled terror in his own companions (in fact he murdered three of them: Juan Barajas, el Mamón and el Farruco). On one occasion he even forced some reapers to eat their lunch on the corpses of their comrades, lying moments before at their feet.