Yanggu (양구) is a district in Gangwon near the Korean DMZ.

See

• Punch Bowl. A valley by 400-to-500-meter-above-sea-level highlands near the coast of Yanggu-gun. American reporters dubbed the basin the punch bowl. From Dolsanryeong that is between the east side and coasts in Yanggu-gun, visitors can view the beautiful panorama of the sea of fog that often hangs around the punch bowl. 
• The Fourth Underground Tunnel. This is the only of the North-Korean-built tunnels discovered with motorized transport inside. The water flowing out from the tunnel have filtered through mountain rock and is considered healthy to drink. 
• Eulji Observatory Tower. Eulji Observatory Tower is located 1,049 meters above sea level and one of the bitterest battlegrounds of the Korean War. From the tower, visitors can see the checkpoint and farms in North Korea and four peaks including Birobong, the highest in the Geumgangsan Diamond Mountains.