More than 800 people are still missing.
The temperature was 48°C at the time.
Erasto Crisanto Valdez disappeared for 15 days in a cenote sinkhole in San Fransisco La Paz, a small rural community in the southern Mexican state of Oaxaca.
More than 800 people are still missing.
August has been a packed month in the celestial calendar.
The Second World War relic was uncovered during work at Kazan National Research Technological University (KNITU), in the west of the vast country.
The temperature was 48°C at the time.
The fourth, Heather’s husband Ian Wilkinson, survived after spending weeks in hospital but continues to suffer lasting damage.