The steepness of the hill represents the slope of the error surface at that point. In southern Indiana, decreasing site quality was associated with increasing slope steepness. When the slope, or steepness ratio, of a wave is too great, breaking is inevitable. In "SC3K", there were five distinct steepness of slope, creating more varied landscapes. Owing to the steepness of its slopes, the glaciers of Kazbek are not very large. In "SimCity 3000", there are five distinct steepness of slope, creating more varied landscapes. A major difficulty faced by the DHR was the steepness of the terrain. This is only noticeable when the wave steepness is large. The plan of Pergamon was affected by the extreme steepness of the site. They also showed that the steepness of rogue waves could be reproduced in this manner. There are two common ways to describe the steepness of a road or railroad. The average grade of steepness is 25 percent. This steepness can be controlled by the formula 13 value.