Jungles can easily support even a big <l:6,104>city<e> though the thick foliage makes navigation difficult. The jungle's foliage also prevents any <l:8,0>farming<e> or <l:8,3>mining<e>. On the other hand, the abundant plant-life creates a wealth of natural resources for <l:6,93>production<e>, is a great source of <l:6,90>food<e>, and provides a defensive bonus. <l:6,25>Rivers<e> greatly enhance this terrain.