I did not use a terrain generator, everything inside the map was created from scratch.
http://www.youtube.com/watch?v=BZ-u4BD9jkM
Pictures from start to finish:
http://i43.tinypic.com/68ho8x.jpg
http://i44.tinypic.com/anzryv.jpg
http://i39.tinypic.com/14a96rl.jpg
http://i41.tinypic.com/20tl4pz.jpg
http://i40.tinypic.com/f4lk7p.jpg
http://i44.tinypic.com/14jyre9.jpg
http://i40.tinypic.com/e63wg5.jpg
http://i39.tinypic.com/ebeo3p.jpg
http://i41.tinypic.com/iz198y.jpg
http://i44.tinypic.com/2qvz6u9.jpg
http://i44.tinypic.com/v4mr94.jpg
http://i44.tinypic.com/2hnozzp.jpg
http://i42.tinypic.com/1222p6o.jpg
http://i39.tinypic.com/1zew31f.jpg
http://i41.tinypic.com/1hv6gj.jpg
http://i44.tinypic.com/357qzoy.jpg
http://i40.tinypic.com/2zjj2vk.jpg
http://i43.tinypic.com/a1lr41.jpg
http://i43.tinypic.com/dpi88l.jpg
http://i39.tinypic.com/5umqn9.jpg
http://i42.tinypic.com/ofq44j.jpg