https://phys.org/news/2018-06-guatemala-rescuers-volcano-survivors.html > Rescue workers who had to call off their efforts overnight tried to put in a few final hours under intense pressure from families desperate to locate loved ones who are feared to have been buried and burned alive. > One rescuer who requested anonymity said the smoking ash and rubble was still 80 degrees Celsius (176 Fahrenheit) at just five centimeters (two inches) below the surface.