Look at this sea cave. It is on Lake Superior. Check out the opening in the rock. In summer, you could paddle a boat through it.
Photo Credit: earleliason/E+/Getty Images
In the Know
Bats Use Sound to “See”
Most bats are active at night. It is dark at … read more
In the Know
Ellis Island
Ellis Island opened on January 1, 1892. What is Ellis … read more
In the Know
What Can Mummies Teach Us?
You might have seen mummies in movies. You might have … read more