One-Line Sky at Mount Wuyi

One-Line Sky at Mount Wuyi

The One-Line Sky at Mount Wuyi is located at the southwestern edge of the Mount Wuyi peaks and is the most remarkable cave among them, often hailed as a wonder of "uncanny craftsmanship." The One-Line Sky lies within a deep, quiet valley south of the Second Bend of the Nine-Bend Stream. Inside, a majestic upright boulder, hundreds of zhang long and thousands of ren high, called "Spirit Rock," leans outward and shelters three adjacent caves: the Lingyan Cave on the left, the Wind Cave in the middle, and the Fuxi Cave on the right. Entering from the Fuxi Cave and venturing deeper inside, you’ll look up to see a crack in the rock ceiling, as if split by an axe, no more than a foot apart and about a hundred meters long, through which a sliver of daylight shines down like a blue rainbow across the void — this is the breathtaking One-Line Sky.

One-Line Sky

There are many folk legends about the origin of the One-Line Sky. Some say it was sliced open by Peach Blossom Girl using her embroidery needle, while others claim it was cleaved by the god Fuxi with his jade axe. However, scientific analysis suggests that the red rock layers of Mount Wuyi consist of interbedded sandstone, conglomerate, and shale, which are relatively brittle in nature. During the uplift of the earth's crust, uneven stress caused slight fractures in these layers, forming what are called "joints." These vertical joints, or tiny fissures, gradually expanded and extended over years of erosion and dissolution by flowing water. Meanwhile, the soft shale at the base of the rock layers eroded away, forming flat, shallow caves. Thus, the natural wonder of three caves in a row with a single line of sky visible was created.

To view the One-Line Sky from the Fuxi Cave, walk right along the rock fissure for several dozen steps to enter the Wind Cave. Visitors must move sideways, using both hands and feet to squeeze through. Inside the cave, you may spot the rare mammal known as the white bat, adding a touch of wonder to the experience. The central Wind Cave also connects to the One-Line Sky. A cool breeze drifts gently through the rock fissure, and even in the peak of summer, sitting here for a short while will make you feel a chill penetrating your bones, as if you’re in a massive natural air conditioner. The two prominent characters “风洞” (“Wind Cave”) on the cave’s stone wall are very eye-catching, inscribed by Xu Ziqiang of the Song Dynasty. Exiting the Wind Cave and walking around a stone corridor, you’ll reach the Lingyan Cave. Legend has it that a celestial being surnamed Ge once subdued demons here, hence the cave is also called the Gexian Cave. Inside, there is an ancient well known as the Holy Water Well.

South of the One-Line Sky stands the Pavilion Rock, directly opposite. This is a sheer cliff-like rock face, with several caves halfway up its wall, believed to be the so-called “celestial pavilions.” To its left is another rock called the Orchid Rock, covered in dense stone inscriptions. Beneath the rock lies a stone leaning against the cliff, with a path extending into it like a mountain pass, known as the Heavenly Gate. Among the scattered rocks in front of the cliff is also a whimsical Snail Cave.

Travel Tips: 1. In the crevices of the One-Line Sky, you can often spot white bats, a rarity in other regions.

2. Beside the cave, you’ll find the rare square bamboo growing among ordinary bamboo.

Address: Inside the Wuyishan National Tourism Resort, Wuyishan City, Nanping City

Type: Cave, Geological Landform

Recommended Visit Duration: 2–3 hours

Opening Hours:

8:00-17:00

Ticket Information:

No separate ticket required

Included in the Wuyishan Scenic Area ticket.

Wuyishan Scenic Area Ticket: Starting from 235 RMB.

Transportation

In the city, you can take Bus No. 6 (or the Xingcun bus) to Shangpu South Entrance, then transfer to a shuttle bus to the scenic area. The trip from the South Entrance to the scenic area takes 18 minutes; or you can take a minibus from the Tianyoufeng intersection to Xingcun, arriving in about 5 minutes.

Wuyishan Scenic Area

Dahongpao Scenic Area

Daanyuan Ecological Tourism Area

China Wuyishan Tea Expo Park

Nine-Bend Stream

Qinglong Grand Waterfall

Wuyishan Wisteria Self-Drive Theme Park

Wuyishan Water Curtain Cave

Dashan Peak

Wuyi Palace

Tiger Roaring Rock

Cloud Nest

Wuyi Mountain Jade Valley

Imperial Tea Garden Ruins

Jade Dragon Valley

Chengcun Han City Ruins

Liu Yong Memorial Hall

Wuyi Mountain White Cloud Rock