At 1:57 pm on January 13, through a call to the emergency center in Málaga, a woman warned that a young child had fallen through a small hole, 25 cm (9.8 in) in diameter.[11] The ground of the well Roselló fell in is very unstable and experts determined that any operation had to be done with great care to avoid landslides.[12] A device and a plan to rescue him was set in motion, moving a machine, drilling piles of 75 tons, together with other heavy machinery, to the site to reduce the terrain to excavate a parallel shaft and, once the level where he was believed to be, to excavate a horizontal tunnel by miners of the Central Salvage Brigade Mining of Asturias, specialists in underground rescues.