Fish River Canyon
- May 13, 2015
- By KIDS DISCOVER
Created by erosion and movement of the earth’s crust, Namibia’s Fish River Canyon is the largest in Africa. Nearly 100 miles long and over a quarter mile deep, it offers serious hikers a 50-mile trail — but only from May to mid-September, when the heat is less intense. (Isabella Pfenninger / Shutterstock)