On the evening of July 16, people suddenly discovered a large sinkhole right next to the edge of the road section passing through Na Ang quarter, Ang village, Moc Son ward (old Dong Sang commune), Son La province.
According to the residents of the neighborhood, a few days before, they had seen 1 - 2 bricks subsided in the sidewalk; at around 9:00 p.m.
on July 16, after hearing a loud noise, the residents of the neighborhood ran out to see and saw the sinkhole.The deep hole of the bamboo tree has not yet reached the bottom, the area with the phenomenon of decline is about 20 - 30m2 wide, the current hole is about 1m2 wide under the water-filled hole.
Immediately after receiving the report, the ward authorities and authorities arrived at the scene, put up ropes and put up warning signs to ensure the safety of people and vehicles.
