South Lake of Tangshan, Recreation area in Lunan District, China

South Lake is a recreation area in Lunan District that spans across several square kilometers with water surfaces and landscaped spaces. Embankment promenades and walking paths wind throughout the grounds, providing access to different sections.

South Lake occupies the site of the Kailuan coal mining area, where extraction caused the ground to subside and groundwater to seep up, a depression locals called "Nan Da Wa". The 1976 Tangshan earthquake worsened the collapse. From 1996 the government began greening the subsided land; construction of the park started on 1 March 2008 and it opened on 1 May 2009.

Locals call the subsided mining land "Nan Da Wa" (South Big Hollow), and the oldest sub-lake, Taohua Tan, is known as "Old South Lake" or "Little South Lake", while the rest form the "Big South Lake". The site now hosts the 2016 World Horticultural Exposition grounds.

The area is accessible via multiple entry points around the lake using public transportation. Information centers and rest areas are positioned at various locations to help visitors navigate the grounds.

The lakes are divided by the Jinshan railway line: north of it lie Taohua Tan, Longquan Wan, Qinglong Ze, Jiangjun Dian and Hanyan Du, south of it Tian'e Hu, Yan Ya Hu and Hehua Dian. Taohua Tan was developed first, so locals call it "Old Nanhu" or "Little Nanhu" and the rest "Big Nanhu".