port-au-prince. but for the mostly desperately poor, displaced people who don't own vehicles and therefore never leave their densely populated city, this could feel like being on the moon. back at the golf course, this woman knows that she and her children are not safe here, but she's never spent any time out of port-au-prince. >> translator: i would like to go, but i don't know the area. i have to find out more about it. >> reporter: actor sean penn started an aide organization to help earthquake victims. his organization oversees the golf course camp. his trying to explain to people here that it's imperative they go someplace safer. so basically when the rains start coming, this creek starts overflowing and it's dark, children could just drown and be carried away in the rapids. >> absolutely. and you see these areas here, this all becomes very slick mud. and they were right on the edge of that, all the way up and down this ditch. because they come out of their tents to see what's happening. and they could slip right down into it. and they'd be carried away in the dark at this point. >> reporter: everyone agrees people who can't go back to