A continent that is kinda like a peninsula...unpassable mountains to the North, and ocean on all 3 sides....1 desert....the rest up to you....using it as a setting for a campaign where the land is overrun by undead, for hundreds of years...so the continent would have to be cut off from any other civiliazations...the heros are brought back 500 years after the undead take over....small pockets of humans and demi-humans have survived...kinda post cataclysmic...you dont have to include cities or anything, because most everything is ruinous....a big river would be good....just wing it...you da man