Udo Island is located on the northeast of Seongsan-ri, 35 km off the coast, Jeju-si, South Korea. This is the largest of the islands included in Jeju-si. Udo, literally "Cow Island" in Chinese, has this name because it looks like a cow lying down. The whole of Udo Island is a lava plateau and a fertile flatland where major agricultural products such as sweet potatoes, garlic, and peanuts are produced. There is a parasitic cone, called shoi meori oreum,in the southeast. Udo can be reached several times a day by ferry from Seongsan-ri.
Udo maintains a mild coastal climate with a chilly winter season.
Many restaurants on this island refuse to serve vegetarian dishes. Prepare for a longer search or get some canned food frome one of the stores and make a picnic.
Most Guesthouses are located along the coast. Try to find your place before the departure of the last ferry as the prices can go up after.