The country at the extreme head of Blue River forms a great mountain amphitheater, with one side so near the upper course of Black River that one can traverse the distance between the basins of the two streams in a short ride. The descent into the drainage of Blue River is very abrupt, and is known locally as the "breaks" of Blue River. The scenery of these breaks nearly, if not quite, equals that on "The Rim" of Tonto Basin in its wild magnificence. The vegetation on the breaks shows at a glance the milder character of the climate, as compared with that of the more elevated area about the head of Black River. In the midst of the shrubbery growth on the breaks there is a fine growth of nutritious grasses, which forms excellent winter forage. The entire southern part of the reserve lying beyond the Prieto Plateau is an excessively broken mountainous country, with abrupt changes in altitude from the hot canyons, where cottonwoods flourish, to the high ridges, where pines and firs abound. The northeastern part of the section of the reserve under consideration is cut off from the rest by the valley of Nutrioso Creek, a tributary of the Little Colorado, and by the headwaters of the San Francisco River. It is a limited district, mainly occupied by Escudilla Mountain, rising to 10,691 feet, and its foothills. Escudilla Mountain slopes abruptly to a long truncated summit, and is heavily forested from base to summit by pines, aspens and spruces. On the south the foothills merge into the generally mountainous area. On the north, at an altitude of about 8,000 feet, they merge into the plains of the Little Colorado, varied by grassy prairies and irregular belts of piñon timber. The upper parts of the Little Colorado and Black Rivers, above 7,500 feet, are clear and cold, and well stocked with a native species of small brook trout.