May 7, 2019
Grand Canyon National Park signed a sister park agreement with China’s Yuntaishan World Geopark in 2007. The agreement was renewed in 2017. (Photo/NPS)
Stories this photo appears in:
Celebrating a Century at Grand Canyon 2000-2009
Part 9 of 10: Grand Canyon through the decades
Celebrating a Century at Grand Canyon 2000-2009
By Williams-Grand Canyon News
May 7, 2019