Drilling has reached the 4 meter mark for the extension of the Fox Permafrost Tunnel, being drilled by scientists from CRREL. This extension will continue back 100 meters or so, with several side connections to the original tunnel, parallel with this one and enters from the left of this one.
Alaska is the largest state in the United States by area. It is situated in the northwest extremity of the North American continent, with Canada to the east, the Arctic Ocean to the north, and the Pacific Ocean to the west and south, with Russia further west across the Bering Strait. Approximately half of Alaska's 710,231 residents (as per the 2010 United States Census) live within the Anchorage metropolitan area. Alaska is the least densely populated state of the U.S.Source: http://en.wikipedia.org/wiki/Alaska