AJP Han Jun-gu Summer visitors enjoy water play at Sanasa Valley in Yangpyeong, Gyeonggi Province, August 4, 2026. Han Jun-gu Copyright ⓒ Aju Press All rights reserved. Related Palgongsan Valley Restored After 70 Years of Illegal Use, 17 Wildlife Species Detected Yantai's Zhaisan AI Valley Emerges as a Key Hub for Artificial Intelligence Industry Summer visitors flock to Sanasa valley for relief from the heat