Mokpo Gatbawi

Character

The 298-meter walkway in front of Mokpo Gatbawi rises and falls with the tide by about a meter. That movement puts visitors at the water-level angle once available mainly from a boat, directly facing the two tuff pillars and the honeycombed weathering that carved their hat-like profiles

Mokpo identifies the rock as welded tuff formed from volcanic ash about 80 million years ago. Its unusual shape developed at the mouth of the Yeongsangang River, where freshwater meets the sea. Repeated wetting and drying by salt-bearing water, together with silica precipitation, weakened parts of the rock unevenly and left harder cap-like sections above deeply weathered cavities

A 2012 study in the Journal of the Korean Geomorphological Association found classic coastal erosion features around Gatbawi: vertical sea cliffs, sea notches, a narrow marine platform and honeycomb tafoni. The two main formations stand about eight and six meters high, so the “two people in hats” resemblance is visible at human scale rather than as a distant cliff silhouette

The experience

The floating walkway changes the encounter more than its length suggests. Its 140-meter floating section follows the water level, while wooden and fixed sections connect it back to shore

From the walkway, the cap and the hollowed lower rock can be read together. The honeycomb pattern is part of a broader tafoni landscape along the cliff, where salt, moisture and wave action have attacked the tuff at different rates. The site works as a compact geology lesson because the erosion is exposed at eye level

Local tradition supplies other explanations for the same silhouettes. One story calls the larger and smaller formations Father Rock and Son Rock after a tale of filial devotion; another says Buddha and an arhat left their hats here while crossing the Yeongsan River. These are legends attached to the shapes, while the protected natural-monument designation rests on the geology

History

The rock itself records a much longer chronology than Mokpo’s urban history. Volcanic material consolidated into tuff tens of millions of years ago, then coastal weathering gradually cut notches, cavities and the paired forms seen today

For modern visitors, the decisive change came on 10 April 2008, when Mokpo opened the marine pedestrian walkway. Before that, the city says the characteristic sea-side view generally required going out by boat

On 27 April 2009, Gatbawi and 1,179 square meters of the adjacent sea were designated Natural Monument No. 500 for their geological and geomorphological value. A detailed 2012 geomorphology study later measured substantial chemical weathering and documented the tafoni, sea cliffs and marine erosion surfaces around the monument

Before you go

Gatbawi is a short outdoor stop inside the larger Gatbawi Culture Town area. The Mokpo Natural History Museum, National Research Institute of Maritime Cultural Heritage and other museums sit along the same Namnong-ro corridor, so the rock works naturally as part of a longer museum-and-waterfront visit

The walkway is the key viewpoint: the hat-like forms are easiest to read from the water side, and the floating section keeps that sightline close to the changing tide