SCP-020

A Mold that is sincerely kills you if you go too much inside. There is 46% of dying from SCP-020 and the other 54% was surviving from the big mold, it goes at least 10-30 acres per minute, we cannot see it with the naked eye, only if you have night-vision goggles. The only way to get rid of it is water, but with no water nearby and the nearest source of water is miles away, the mission would be impossible to complete.