Forests and woodland make up about 28% of Guinea's land area. The nation's forest resources offer great promise, the major constraint on development being lack of adequate transportation. Logging and sawmill facilities have been built in the Nzérékoré area. Removal of roundwood was estimated at 12.1 million cu m (427 million cu ft) in 2000; about 95% of the harvest was used for fuel. Exports of forestry products totaled $6.0 million in 2000, while imports amounted to $4.5 million.