A general pitfall. You have to jump over the fall.

A Pitfall is the name for a kind of trap, in which if fallen into, you either get killed or survive and advance. This trap was seen in campaigns of both Plazma Burst: Forward to the Past and Plazma Burst 2. This is somehow a common trap type in the series because if you fall on the pitfall you often die instantly. You can sometimes live but then become trapped and you will be force to kill yourself. A good example of a pitfall can be found in Level 32.