Chongqing is one of four provincial-level municipalities. It is the largest municipality with 82,300km² and the most populous with 31,442,300 inhabitants, which means a density of 382/km².
While agriculture remains a significant part of the economy, the municipality is abundant with natural resources. There are large deposits of coal, natural gas, and more than 40 kinds of minerals such as strontium and manganese. Unfortunately the mining operations are said to be wasteful, heavily-polluting, and unsafe. As far as we know there has been no mine opened for the public so far.
The province is dominated by the so-called Red Basin, a basin crossed by the Jangtse and surrounded by hill country, named after the red sandstone. The northwest is an alluvial plain. The Wansheng District, a southern district of Chongqing municipality, is famkous for its karst features. There are show caves, a stone forest, hot springs and gorges. Often overlooked, because of the other great sights, Dazu Rock Carvings and the Three Valley Dam, it is well worth a visit.