a landslide geologist, and he works here for washington state. he says he thinks it's a rotational landslide. he says it's possible that the land in this area has been moving for several months, several years. it could be happening all the time. he thinks that is what led to this giant landslide. again, it's over 700 feet wide. and we've got dozens of people that have been evacuated. they're worried about what they're going to come home to. >> is there anything they can do? this may be a dumb question. but to shore up the cliffside? >> reporter: right now, no. that's why they have this entire area evacuated. they just want people to stay away. they want to keep them safe. i was out here all afternoon with my photographer. we watched the rock fall and it continued to fall, large clumps of rock. so it's pretty scary out here. >> incredible. jamie, appreciate your reporting, thanks much as we look at more images, we're joined on the phone by the local fire chief, ed harden and one of the evacuated islanders. ed, how many homes right now are affected?