ly changing environmen
t.At the northern end of the Chihuahuan Desert lies
a mountain-ringed valley, the Tularosa Basin. Rising
from the heart of this basin is one of the world's
great natural wonders-the glistening white sands
of New Mexico. Great wave-like dunes of gypsum
sand have
engulfed 275 square miles of desert
here an
d created the largest gy
psum dune field
in the w
