RioTinto

The Río Tinto is a highly toxic river in southwestern Spain that rises in the Sierra Morena mountains of Andalusia. It flows generally south-southwest, reaching the Gulf of Cádiz at Huelva. The Rio Tinto river has a unique red and orange colour derived from its chemical makeup that is extremely acidic and with very high levels of iron and heavy metals.
  • Country: Spain
  • Region: Andalusia
  • Source: Sierra Morena
  • Length: 100 km (62 mi)
Data from: en.wikipedia.org