The roof of the mine began to cave in
The old tunnel finally caved in after the heavy rain
The team was worried the hillside might cave in
Without support, the walls of the trench started to cave in
He predicted the entire structure would cave in if not reinforced
The sheer weight of the snow caused the shed roof to cave in
After the earthquake, part of the building caved in
They had to evacuate the area because the ground was caving in
The explorers feared the cave would cave in on them
The constant erosion caused the riverbank to cave in
The old tunnel might cave in.
We should be careful exploring.
Yes, let's stay on the safe side.
The roof began to cave in after the heavy rain
The roof started to collapse from the heavy rain
Heavy rain caused the roof to give way