Correct

崩坍

/ bēngtān / 
Strokes

Definition

landslide/collapse (of mountain side)/talus slide

Example

As a Verb

collapse; shatter; give out

1
Suìdào
隧道
dǐngbù
顶部
bēngtān
崩坍
le
了
  
。

The roof of the tunnel caved in.