Nothing obvious. Although on Summer if you turn to the right (kind of NE, maybe even slightly ENE) you will very quickly (within a few seconds) come to a really odd-shaped dropoff into a pool. At first I kind of thought it was a claw, then I thought it might be a rocket, which is the logo of the developer, Bottle Rocket.
Besides that, nothing. And I'm kind of disappointed with the app overall, even after spending a while with it. The draw distance is wayyyy too short, so there aren't any great shots of the scenery in the distance. The graphics aren't stellar enough to keep the variable ground texture interesting, although the sky is nice. And there is no speed, and no giant canyons to dive into!