coalmines, one of which is still active. It is located in Hvalba, near the tunnel. Other coalmines were in Rangabotnur in Trongisvágur (on the south side of Trongisvágsfjørður), and in Fámjin. The bays of Øravík, Trongisvágur, Fámjin, Vágur and Hvalba are designated grind bays. In contrast to the name Suðuroy (South Island, singular), the name Suðuroyggjar (Southern Islands, plural) refers to the Outer Hebrides in Scotland. To refer to the islands south of Skopunarfjørður one can colloquially say (going) "sunnanfjørðs" or formally Suðurøkið. Important Bird Area The western side of the island has been identified as an Important Bird Area by BirdLife International because of its significance as a breeding site for seabirds, especially northern fulmars (100,000 pairs), European storm petrels (2500 pairs), European shags (200 pairs), black-legged kittiwakes (39,000 pairs), Atlantic puffins (20,000 pairs), common guillemots (31,900 individuals) and black guillemots (400 pairs). Transport and infrastructure MS Smyril operates two to three times daily between Tórshavn and Suðuroy, leaving from the new ferry port of Krambatangi on the south side of the fjord of Trongisvágsfjørður. The journey takes two hours. There are two national bus routes in Suðuroy, route 700 operates between Tvøroyri and Sumba (the southern line) and 701 between Fámjin and Sandvík (the northern line). There is a heliport at Froðba with flights to Tórshavn and Vágar Airport. A road network runs the entire length of the island, including five road tunnels: the Sandvíkartunnilin (1969), the old and new Hvalbiartunnilin (1965 and 2021), Hovstunnilin (2007) and Sumbiartunnilin (1997). The Fámjinstunnilin will be started with in 2022. The proposed Suðuroyartunnilin would connect the island with Skúvoy and Sandoy, replacing the ferry Smyril. The Suðuroy electricity grid depends on the Vágur 13 MW diesel, 6.3 MW wind turbines and the 3.3 MW hydro Botnur power plant. The island is not connected to other islands. A 250 kW solar park was installed at Sumba in 2019, and produces 2 MWh/day at best. Power supply agency SEV calculated that two 900 kW wind turbines could save DKK 6 million per year on diesel, and seven Enercon wind turbines at a combined 6.3 MW were installed at Porkeri Mountains in 2020. The wind turbines reduced the consumption of oil. A 6MW / 7.5MWh grid battery and a syncron compensator is planned to stabilize the grid. Sights and activities Cliffs Vágseiði is a place with cliffs towards south, but the road is down