Longchang vs Río Otún

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Longchang (Chinese: 隆昌; pinyin: Lóngchāng) is a county-level city of Sichuan Province, China. It is under the administration of Neijiang city. Longchang has a population of nearly 760,000, covering 792 square kilometer. Longchang seizes an important geographic location as the boundary of Sichuan and Chongqing, and plays as distributing center of Sichuan, Yunnan, Guizhou, Chongqing. Since the advantageous location, many important traffic ways pass through Longchang, like the Chengdu–Chongqing Railway, highway, public road, East Chuanyun (Sichuan to Yunnan) road, Longna (Longchang to Luzhou) highway, Longya (Longchang to Ya'an) road, Longhuang (Longchang to Huangtong Guizhou) railway.

To get out of Sichuan Province and further go to the sea, you could choose Longchang as the best way. Thus it is called the east gate of Sichuan. In the long history, Longchang is famous for memorial arches and blue stone. Longchang is a feature to develop tourism. Nowadays, Longchang has finished the plan of bluestone cultural city with eight bluestone image views, including gate, culture, city's dining room, lounge, green park, landscape, business district, landmark. Still this county has some other tourism resources, like groups of memorial arches, Guyu artificial lake, Yunding stockaded village, and Lamp Mountain.

Source: Wikipedia

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The Otún River (Río Otún) is a river in the Risaralda department of Colombia. Its source is Lake Otún, fed by meltwater from Nevado Santa Isabel, and its outlet is the Cauca River. The Otún River passes between the cities of Pereira and Dosquebradas, and is crossed at that point by the César Gaviria Trujillo Viaduct, one of the largest cable-stayed bridges in South America. The Otún River is the only source of drinking water for Pereira and Dosquebradas.

The local water company takes about 1.8 cubic metres per second (64 cu ft/s) from the river at a site known as Nuevo Libaré. Agricultural development in that region has affected the quality of the water from the river, with pig and chicken farms as well as human waste water being major sources of bacteriological contamination.[1]The river passes through several protected zones including the Otún Quimbaya Flora and Fauna Sanctuary.

Source: Wikipedia