

Before and After
Olympian land changes in South Korea
April 3, 2013 - Feb. 12, 2018
South Korea’s Jeongseon Alpine Centre was built on heavily forested Mount Gariwang for the 2018 Winter Olympics skiing events. The 2013 image shows the area before renovations, which included the removal of 58,000 trees. The 2018 image was taken during the games. In these pseudo-true-color images, snow is white and forest appears bright green. Images taken by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA's Terra satellite. Source: U.S. Geological Survey’s Land Remote Sensing Image Collections.






