Help make Alexa smarter on Alexa Answers. Sign in with Amazon

Geography

When was the grand canyon formed?

1 Answer

Scientists estimate that the Grand Canyon started forming when, what is now the Colorado River, began to cut a channel through the layers of rock which would be 5 to 6 million years ago.

{{ relativeTimeResolver(1670514313516) }}

LIVE
Points points 9
Rating

Similar Questions
Join Alexa Answers

Help make Alexa smarter and share your knowledge with the world

LEARN MORE
Geography 2 Answers
Geography 1 Answer

Join Alexa Answers

Help make Alexa smarter and share your knowledge with the world

LEARN MORE