Lazy River
Over a year ago, scientists discovered a river that is 4 km underneath the Amazon. They believe that Rio Hamza may be as long as the Amazon, but much wider. The Amazon ranges from 1 km to 100 km and the Hamza ranges from 200 km to 400 km. The Hamza only flows 1 millimeter per second. That's practically not moving at all. They found the river by collecting the temperature down many of the wells. 

"Entardecer no Amazonas" photo taken by Daniel Zanini H.

Source posted by Julia