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Historical Values
Year Value
2002 extending 1,650 km north to south, the country is only 50 km across at its narrowest point
2003 extending 1,650 km north to south, the country is only 50 km across at its narrowest point
2004 extending 1,650 km north to south, the country is only 50 km across at its narrowest point
2005 extending 1,650 km north to south, the country is only 50 km across at its narrowest point
2006 extending 1,650 km north to south, the country is only 50 km across at its narrowest point
2007 extending 1,650 km north to south, the country is only 50 km across at its narrowest point
2008 extending 1,650 km north to south, the country is only 50 km across at its narrowest point
2009 extending 1,650 km north to south, the country is only 50 km across at its narrowest point
2010 extending 1,650 km north to south, the country is only 50 km across at its narrowest point
2011 extending 1,650 km north to south, the country is only 50 km across at its narrowest point
2012 extending 1,650 km north to south, the country is only 50 km across at its narrowest point
2013 extending 1,650 km north to south, the country is only 50 km across at its narrowest point
2014 extending 1,650 km north to south, the country is only 50 km across at its narrowest point
2015 extending 1,650 km north to south, the country is only 50 km across at its narrowest point
2016 extending 1,650 km north to south, the country is only 50 km across at its narrowest point
2017 extending 1,650 km north to south, the country is only 50 km across at its narrowest point
2018 extending 1,650 km north to south, the country is only 50 km across at its narrowest point
2019 note 1: extending 1,650 km north to south, the country is only 50 km across at its narrowest point note 2: Son Doong in Phong Nha-Ke Bang National Park is the world's largest cave (greatest cross sectional area) and is the largest known cave passage in the world by volume; it currently measures a total of 38.5 million cu m (about 1.35 billion cu ft); it connects to Thung cave (but not yet officially); when recognized, it will add an additional 1.6 million cu m in volume; Son Doong is so massive
2020 note 1: extending 1,650 km north to south, the country is only 50 km across at its narrowest point note 2: Son Doong in Phong Nha-Ke Bang National Park is the world's largest cave (greatest cross sectional area) and is the largest known cave passage in the world by volume; it currently measures a total of 38.5 million cu m (about 1.35 billion cu ft); it connects to Thung cave (but not yet officially); when recognized, it will add an additional 1.6 million cu m in volume; Son Doong is so massive
2021 note 1: extending 1,650 km north to south, the country is only 50 km across at its narrowest point note 2: Son Doong in Phong Nha-Ke Bang National Park is the world's largest cave (greatest cross sectional area) and is the largest known cave passage in the world by volume; it currently measures a total of 38.5 million cu m (about 1.35 billion cu ft); it connects to Thung cave (but not yet officially); when recognized, it will add an additional 1.6 million cu m in volume; Son Doong is so massive
2022 note 1: extending 1,650 km north to south, the country is only 50 km across at its narrowest point note 2: Son Doong in Phong Nha-Ke Bang National Park is the world's largest cave (greatest cross sectional area) and is the largest known cave passage in the world by volume; it currently measures a total of 38.5 million cu m (about 1.35 billion cu ft); it connects to Thung cave (but not yet officially); when recognized, it will add an additional 1.6 million cu m in volume; Son Doong is so massive
2023 note 1: extending 1,650 km north to south, the country is only 50 km across at its narrowest point note 2: Son Doong in Phong Nha-Ke Bang National Park is the world's largest cave (greatest cross sectional area) and is the largest known cave passage in the world by volume; it currently measures a total of 38.5 million cu m (about 1.35 billion cu ft); it connects to Thung cave (but not yet officially); when recognized, it will add an additional 1.6 million cu m in volume; Son Doong is so massive
2024 note 1: extending 1,650 km north to south, the country is only 50 km across at its narrowest point note 2: Son Doong in Phong Nha-Ke Bang National Park is the world's largest cave (greatest cross sectional area) and is the largest known cave passage in the world by volume; it currently measures a total of 38.5 million cu m (about 1.35 billion cu ft); it connects to Thung cave (but not yet officially); when recognized, it will add an additional 1.6 million cu m in volume; Son Doong is so massive
2025 note 1: extending 1,650 km (1,025 mi) north to south, the country is only 50 km (31 mi) across at its narrowest point note 2: Son Doong in Phong Nha-Ke Bang National Park is the world's largest cave (greatest cross-sectional area) and is the largest known cave passage in the world by volume at 38.5 million cu m (about 1.35 billion cu ft); it connects to Thoong cave, but not yet officially -- when recognized, it will add an additional 1.6 million cu m; it is so massive that it contains its own ju