Korea - HK - China - KORKONG! - Page 3 - 251

It is genuinely impressive that they managed to do this for 13km, and I can confirm there were no gaps and it does go all the way around even on the remote back side of the course.

Camera Details: SONY, ILCE-7M2
Settings: 1/160 at f/8, ISO 100, 28 mm
Date: 07 April 2019 Time: 11:47:24