This is a green map, with a lot of oasis. I have played it three times, and I have not experienced any problems, and you can build anything except hunters' post. There is a story included with the map, so I won't write one here. This is my fourth map, so plz comment so I can get better.
Hints: On the map there are only two places to get iron and two places to get stone, so chose where to place your keep carefully. Remember, you only need one square of oil to build a pitch rig, so if you are careful when placing rigs you can get more pitch. The best spot to get resources is in the middle on the bottom, because there is stone, iron, pitch and an ample supply of oasis.