The
divide between the heads of these streams is so low that in the midst of
the undulating country, where they rise, it is often difficult to
determine at first sight to which drainage some of the small tributaries
belong. This district is largely of volcanic formation, and beds of lava
cover large tracts, usually overlaid with soil, on which the forest
flourishes.
The entire northern side of this section is bordered by the sloping
grassy plains of the Little Colorado, which at their upper border have
an elevation of 6,500 to 7,500 feet, and are covered here and there with
pinons, cedars and junipers, especially along the sides of the canyons
and similar slopes. At the upper border of this belt the general slope
becomes abruptly mountainous, and rises to 8,000 or 8,500 feet to a
broad bench-like summit, from which extends back the elevated plateau
country already mentioned. This outer slope of the plateau is covered
with a fine belt of yellow pine forests, similar in character to that
found in the northern part of the reserve.
Pages:
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525