A week after a dam burst at a mine in southeastern Brazil, killing at least 115 people and leaving 248 others missing, new images and video footage shows the exact moment of the collapse.
On Jan. 25, an avalanche of red mud buried buildings and contaminated water. The search for survivors has continued, though no one had been found alive during the past week. Rescuers have been digging deeper into the brown sludge. That dam released 2.5 billion gallons of sludge.