Recently, under clear skies, rare "light rays" pierced into a dark cave at the Huangyan Tourism Resort, Hecheng District, Huaihua City. The dreamlike path of light and shadow, created by the Tyndall effect, left every visitor in awe of nature's marvels. Tourists raised their phones to capture this precious moment. (Photo/Tian Wenguo）

Recently, under clear skies, rare "light rays" pierced into a dark cave at the Huangyan Tourism Resort, Hecheng District, Huaihua City. The dreamlike path of light and shadow, created by the Tyndall effect, left every visitor in awe of nature's marvels. Tourists raised their phones to capture this precious moment. (Photo/Tian Wenguo）

Recently, under clear skies, rare "light rays" pierced into a dark cave at the Huangyan Tourism Resort, Hecheng District, Huaihua City. The dreamlike path of light and shadow, created by the Tyndall effect, left every visitor in awe of nature's marvels. Tourists raised their phones to capture this precious moment. (Photo/Tian Wenguo）

Recently, under clear skies, rare "light rays" pierced into a dark cave at the Huangyan Tourism Resort, Hecheng District, Huaihua City. The dreamlike path of light and shadow, created by the Tyndall effect, left every visitor in awe of nature's marvels. Tourists raised their phones to capture this precious moment. (Photo/Tian Wenguo）

This article is from the Hunan Provincial Government www.enghunan.gov.cn. 

Translator: Xiao Juan

Chinese source: hunantoday