'The gypsum sand in this New Mexico national monument comes from the mountains flanking the valley'
White Sands
NATIONAL MONUMENTS: The gypsum sand in this New Mexico national monument comes from the mountains flanking the valley
The gypsum sand in this New Mexico national monument comes from the mountains flanking the valley
The gypsum sand in this New Mexico national monument comes from the mountains flanking the valley
NATIONAL MONUMENTS
White Sands
NATIONAL MONUMENTS