Take a bus tour of the island. For ₩20000-30000 you can charter a van (for up to eight people) to take you to all the islands major attractions, ask the owner of your pension/minbak if they can arrange this for you.
비조봉
Climb Bijobong Peak (292m). Climb Bijobong peak, the highest accessible point on the island, for a great view of the island and surrounding islands on a clear day. It's a very easy climb (under 2km on some paths), part of a roughly 7km trail network connecting Bijobong to Unjubong and Guksubong peaks. At the peak there is an observation deck made to resemble a wooden pagoda.
밧지름 해변
Camp at Batjireum Beach. It is the only way to stay on this beach, which is the island's nicest beach. You will have to bring your own equipment, but it is one of the nicest camping locations in the area.