Sink Hole (IMAGE) University of Alaska Fairbanks Caption A sink hole caused by melting permafrost is seen alongside the road in Goldstream Valley, about 10 miles outside of Fairbanks, Ala. University of Alaska Fairbanks professor Vladimir Romanovsky has received two grants from the National Science Foundation for his work on permafrost. Credit Vladimir Romanovsky Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.