Skip to main content
NAU Logo Home Quick links
Special Collections & Archives
Library Home
Research Help
Services
General Information
Special Collections
 
 

Petrified Forest Nat'l Park, Arizona. A piece of polished wood, perhaps 150 million years old, transformed from vegetable matter to precious stone. Given a high gloss, it is indeed a museum piece, to be seen in the Rainbow Forest Museum of the park. [Photographer's caption]

small (250x250 max)
medium (500x500 max)
Large
Extra Large
large ( > 500x500)
Full Resolution
  •  
Loading content ...
you wish to report:


...
Select the collections to add or remove from your search
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
 
OK