According to the authorities a truck lost its breaks and caused a pile up in túnel Los Venados killing 7 people and injuring more than 30 people. The spectacular accident happened on Tuesday afternoonbetween the municipalities of Calarcá and Cajamarca. Specifically, at km 42 + 700 meters on the Ibagué - Calarcá road.

https://www.elpais.com.co/colombia/accidente-en-tunel-los-venados-de-la-linea-deja-siete-muertos-y-mas-de-30-heridos.html