The Porta della Fuga (the name alludes to the repulse of Hannibal) occupies the site of a Roman gate, but is itself medieval: while the medieval enceinte encloses a somewhat wider area than the ancient.
Long, and encloses 200,000 flowers.
The Atlas range, the north-westerly part of the continent, between its seaward and landward heights encloses elevated steppes in places 100 m.
Nodules of flint when removed from the chalk which encloses them have a white dull rough surface, and exposure to the weather produces much the same appearance on broken flints.
Eastward of these come the Ishan el-Aswad or "Black Mound" and three lines of rampart, one of which encloses the Babil mound on the N.