The above image spans about one kilometer near the north of Mars, and the elevation drop from right to left is over a kilometer.
上图在火星北半球，绵延约一公里，从右向左的海拔落差超过一公里。
2
Superimpose a building elevation, a page in a book or a website page and with very little adjustment they will fit, but most importantly they will all work and feel right.
It took a great deal of structural analysis work on our part so that we would be able to tell the contractor to build the right cambers so they would all go to the zero baseline elevation.