New satellite photos from April 29, 2012 indicate that a major upgrade of North Korea’s Tonghae Satellite Launching Ground—more commonly referred to as Musudan-ri—underway since summer 2011, is making rapid progress. The new construction is intended to support future launches of rockets larger than the recently tested Unha—more capable liquid fueled space launch vehicles or missiles with intercontinental ranges—that will also overfly Japan, further aggravating regional tensions. In addition to a new launch pad under construction, much of the nearby village of Taepodong has been razed to clear the way for what appears to be a new building designed to assemble larger rockets. The high bay portion of that building—the area where rockets are assembled—may have twice as much floor space as similar facilities at Musudan-ri and the new Sohae Satellite Launching Station (commonly referred to as Tongchang-ri). At the current pace of construction, the facilities should be operational by 2016-17.

Read the article at 38 North.