Mount Baektu is quite the breath taking formation located on the China – North Korea border, with a 2,744 meter summit capped by a lake (Heaven Lake) which is formed within a crater. This image was taken by NASA’s Terra satellite using the ASTER instrument, which has been using 14 spectral bands from the visible to the thermal infrared wavelength region, to map the Earth’s surface and document changes since its 1999 launch.  Another interesting fact about Baektu Mountain is that it is an active volcano which hasn’t erupted since 1903.