Moments before...

Cree's amazed by the floating islands! It doesn't really know how the islands float and they want to learn! Cree wants to learn how the islands are floating and how the energy ball at the top powers the city below. 

To do the though Cree has to get a real good look at the... pyramid like thing. And to do that Cree needs to step back all the way to the edge...

This is something that happens very soon after :]