Opening Hours: Open all day
Ticket Price: 10 Yuan per person
Contact & Location: Coastal area of Huanghua City, Hebei Province
Best Visiting Time:
Cangzhou lies on the Bohai Bay in the southeastern part of Hebei Province, featuring a typical warm temperate semi-humid continental monsoon climate. It has cold winters and hot summers with four distinct seasons, and the annual average temperature is about 12°C. Autumn is the ideal time for a visit.
Complaint Hotline: 0317-2080122
Transportation Guide:
Cangzhou enjoys convenient transportation. The Beijing-Shanghai and Beijing-Kowloon railway lines pass through the city. A dense network of highways includes National Highways 104, 106, 205 and 307.
Scenic Spot Introduction
Stretching along the coast of Cangzhou, the ancient shell ridges were formed over more than 7,000 years during the land formation of the Bohai Bay shores. They are the only existing group of such landforms in China and rank among the largest ancient shell ridges worldwide.
As one of the world's three major ancient shell ridge systems, the Huanghua Ancient Shell Ridges consist of six ridges running roughly parallel to the coastline from west to east along the local coast:
Shenzhuang - Dongsun Village Shell Ridge
Located in the southeast of Huanghua City, it starts at Shenzhuang in the north and extends southwards for about 1.5 kilometers past Sun Village.
Miaozhuang - Tongju Shell Ridge
Situated around 3 kilometers southeast of Huanghua City.
Xuguan - Wudi Platform - Shajingzi Shell Ridge
Running north-south across the Third Branch of Zhongjie Farm, it starts at Jugézhuang in Tianjin in the north and ends at Xuguan of Huanghua in the south. Most sections of this ridge are buried underground.
Jilingpo-Liuhongbo Shell Ridge
Lying on the west side of Jilingpo, west of Guanjiabao in Huanghua, this north-south ridge stretches for over 3 kilometers.
Qikou - Langtuozi Shell Ridge
Distributed along the high-tide line of Cangzhou's present coastline, it extends in a southeast-northwest direction.
Qikou - Zhaojiabao Low-tide Shell Ridge
Located on the low-tide beach, 2.2 kilometers offshore from Gaotou Village (Qikou) to Zhaojiabao.
In the past, local officials and residents lacked awareness of the profound scientific value of the shell ridges and failed to protect them effectively. Since shells serve as excellent natural feed additives and building materials with easy access and low cost, all six ancient shell ridges in Huanghua have suffered damage to varying degrees, and most above-ground sections have disappeared. By 1995, only a roughly 1-kilometer visible section remained between Houtangbao and Zhangjuhe.
Scientific research confirms these ridges took shape alongside the land evolution on the west bank of Bohai Bay over the past 7,000 years. Boasting rare scale, long formation period and abundant information about ancient geological environments, they hold great significance in international Quaternary geology research. They provide natural references for studying ancient marine transgression and environmental evolution, and also act as a natural barrier against seawater intrusion caused by storm surges.
A shell ridge is a dune-like landform composed of marine shells and shell fragments, mixed with fine sand, silt, peat and silty clay. It runs roughly parallel to the coastline or at a slight angle, forming near the historical high-tide line and serving as a definitive geomorphological marker of ancient coastlines.
Between 10,000 and 5,000 years ago, marine transgressions submerged parts of the coastal plain of Cangzhou. Afterwards, the sea level receded and land gradually formed via river alluviation. The shell ridges are relics of this geological process, representing a distinctive coastal landform of Cangzhou and remnants of the ancient Bohai Bay shoreline, which records the coastline migration from inland to sea.
The ridges host a rich variety of shells, mostly from extant mollusk species inhabiting intertidal zones and shallow muddy seabeds. They measure 0.5 to 5 meters in height, tens to hundreds of meters in width, and range from dozens of meters to over a hundred kilometers in length. Their cross-section features a convex top, with both sides gradually thinning out until they fade away
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