What is this?
a waterfall
What is this?
a forest
What is this?
a canyon
What is this?
a city
What is this?
a park
What is this?
the ocean
What is this?
a pond
What is this
plains
What is this?
A desert
what is this
a river
What is this?
a mountain
What is this?
a volcano
What is this?
an island
What is this?
a lake