At the latter location, Yeremenko paid closer attention to swirling lines on the contour map indicating hills rising to elevations of from two to three hundred feet. The hills followed the main road the rest of the way to the congested suburbs of Stalingrad. With mounting excitement, he noted deep ravines cutting across the region from east to west and concluded that it would have to be in this twenty-mile strip of hill country that he would try to halt the German advance.