Economy of Sierra Leone small communities, walking is often the preferred method of transportation in Sierra Leone. There are 11,700 kilometres (7,270 mi) of highway in Sierra Leone, of which 936 km (582 mi) are paved. There are 800 km (497 mi) of waterways in Sierra Leone, of which 600 km (373 mi) are navigable year-round. Major ports of Sierra Leone include: Bonthe, Freetown and Pepel. Queen Elizabeth II Quay in Freetown represents the country's only deep water port facility capable of berthing large-hulled cargo or military vessels. There are ten airports in Sierra Leone, of which one - Lungi International Airport in Freetown
Sierra Leone only source of income for many communities in a country still recovering from over a decade of civil war. In June 2005, the Royal Society for the Protection of Birds (RSPB) and BirdLife International agreed to support a conservation-sustainable development project in the Gola Forest in south eastern Sierra Leone, an important surviving fragment of rainforest in Sierra Leone. Sierra Leone is a constitutional republic with a directly elected president and a unicameral legislature. The current system of the Government of Sierra Leone is based on the 1991 Sierra Leone Constitution. Sierra Leone has a dominant unitary central government and