The Vichada river in Colombia is a tributary of the Orinoco. In 2004 part-time geologist Max Rocca discovered that it skirts South America’s largest impact crater. It measures 50 km in diameter, nearly a third of the Chicxulub crater caused by the space rock that killed off the non-avian dinos.
This image visualises two important things.
1. Our planet is just another crater-pocked space rock, though here surface erosion acts much faster than on nearby worlds, and we have plate tectonics, all obscuring the impact scars. The Vichada example is a recent one, being less than 30 million years old.
2. Geological time is looong. Look at that meandering river doing a little detour around the crater’s edge!
There’s a good feature piece on the Vichada crater at the Planetary Society’s web site.