Are they serious?

Would you really buy this land? I know it's waterfront, but come on now. It's steep. AND it's below the area where a house slid into the water and killed a family of 4 in January 1997. Now what if I told you it's listed on the John L. Scott website for $459,000. Are they insane?

There's more information on the USGS site, including a photo of the landslide