It's a steep one-hour climb, with more than 900 steps,to reach the top of scenic Mt Mani-san (469m). At its summit is Chamseongdan (참성단; 10am to 4pm), a large stone altar said to have been originally built and used by Dangun, the mythical first Korean. There's also a helipad and rocky outcrops, which both offer splendid views. It's 14km from Ganghwa-eup; bus 41 leaves here hourly (30 minutes).
