That's a Big Rock!
The absolute coolest thing about Rio De Janerio was the build up of the city between all these crazy mountains. This one was breath-taking at sunset, as the sun just hit the wall of buildings and the mountains, and it reflected perfectly in the lagoon below it. What is crazy is I think the cement pillars in the mountain are there to prevent the rocks at the top from falling down. I wonder what building insurance goes for under that thing?