The rock is 46 meters long, 15 meters high, 8 meters wide in its upper part, while the "proboscis of the elephant" is as round as 9 meters.

The rock was a small islet formed by ground subsidence in the area of the West Sea of Korea in the period from the late 3rd century to the early 4th century.

Abrasion and weathering turned the islet to be the present-day rock.

The rock has "ivory" and a small hole on the middle of "proboscis".

When the rock is flooded by high tide, it looks like an elephant swimming in the sea.