As we walk the backcountry often we come across lone pinnacles that tower above the surrounding landscape. It's hard to miss them, these rock monoliths, that seem to sprout abruptly from the desert floor invading our perception.
|Iconic image of Weavers Needle in the Superstition Wilderness Area. |
This formation is the solidified remains of a volcano, the outer shell
of which eroded long ago.
|Unnamed peak in the Pinacate Biosphere in Mexico. It also may be |
the solidified core of an extinct volcano, or . . . it may not.
|This monolith in Monument Valley shows the pebble-by-rock-by-sand-grain-|
fate to which these giant structures will erode.
|Eons from now Monument Valley will no longer grab our |
attention but rather will be gravel and dust. How do we know?
The talus slopes at the base of these monoliths gives us a clue to