The exercise, conducted in the challenging Cueva del Reguerillo, aimed to train advanced rescue techniques in cavities. This initiative is part of a collaboration agreement between the Madrid 112 Security and Emergency Agency and the Madrid Speleology Federation, seeking to strengthen preparedness for high-risk situations.

Operations in underground environments present unique challenges, such as poor visibility, difficult access, and the potential presence of low-oxygen atmospheres. Therefore, professionals used respiratory protection equipment and gas detectors, simulating real emergency conditions to ensure an effective response.

The drill began with an alert from a speleologist who, after managing to exit, informed 112 about several trapped individuals with possible injuries. This situation activated a full emergency response, including the establishment of an advanced command post near the Pontón de la Oliva to coordinate the entry of teams into the cavity.

Specialists entered with limited information on the exact location and condition of the simulated casualties, replicating the typical difficulties in such incidents. GERA firefighters and specialized speleologists were responsible for freeing the simulated victims, while SUMMA 112 paramedics assessed their condition and organized evacuation and hospital transfer as part of the exercise.

Volunteers from the Immediate Logistics Response Team of Civil Protection Volunteers (ERIVE) provided essential logistical support, ensuring the continuous operation of the drill and covering the needs of the entire deployment during its duration.