Keywords: 
canyon, 
geology, 
river		Location: 24°13'32" N, 121°3'1" E, 828.5m; near: 
Guguan, 谷關, 
map
		Camera/lens: Armor_3
		Aperture: 1.8, Shutter speed: 1/100, Focal length: 3.5 mm, ISO: 73, Bias: 0
		Date/Time: 2019:12:08 09:54:39
		Average color: 
gray39