|
||||||
|
|
||||||
 |
 |
 |
 |
|
|
|
|
||
 |
Perched erratic boulder, Newfoundland, Canada
Blocks and boulders were deposited on this granite surface by melting glaciers, frequently in very unusual and precarious positions.
(Source: Natural Resources Canada. Unattributed photograph. Copyright Terrain Sciences Division, Geological Survey of Canada.)
