These photos were made by a high resolution stereo camera on board the European Space Agency's Mars Express orbiter. The photos are of Hebes Chasma, an enclosed trough, almost five miles deep.Scientists believe these shots can be used to prove there was once water on Mars.

Driving is not safe. Driving on dangerous roads is not safe at all. Here's top 5 of world's "Roads of Death":1. BoliviaNorth Yungas Road runs in the Bolivian Andes and goes down almost 4 kilometres so narrow, it takes one's breath away. Every couple of weeks somebody dies there, and around 150 people every year. 2. ChinaGuoliang