Keywords: Road dip caused by melting permafrost.jpg en An example of thermo-karst topography caused by the melting of permafrost causing the road to drop In this instance the relative elevation change is approximately 10 feet Image ID line5193 NOAA's America's Coastlines Collection Location Alaska Seward Peninsula Photo Date 2010 August 2012-04-11 NOAA Photo Library http //www photolib noaa gov/brs/clind108 htm Dr John Cloud NOAA Central Library PD-USGov Uploaded with UploadWizard Roads in Alaska Tundra of Alaska Seward Peninsula Subsidence |