brewbooks:
Vishnu schist and Zoroaster granite
brewbooks:
To Be Identified Rock
brewbooks:
Two Bridges across Colorado River
brewbooks:
South Rim
brewbooks:
Tapeats Sandstone
brewbooks:
Tapeats Sandstone
brewbooks:
Tonto Platform
brewbooks:
Tonto Platform
brewbooks:
Rim from Tonto Platform
brewbooks:
South Rim from Tonto Platform
brewbooks:
Rim from Tonto Platform
brewbooks:
Rim from Tonto Platform
brewbooks:
South Rim from Tonto Platform
brewbooks:
Me on Tonto Platform
brewbooks:
Jerry on Tonto Platform
brewbooks:
Mary on Tonto Platform
brewbooks:
Bruce on Tonto Platform
brewbooks:
Bruce on Tonto Platform
brewbooks:
Bruce on Tonto Platform
brewbooks:
Brenda on Tonto Platform
brewbooks:
Brenda on Tonto Platform
brewbooks:
Brenda on Tonto Platform
brewbooks:
Black Bridge on Colorado River
brewbooks:
Bruce Pointing out the Great Unconformity
brewbooks:
Boats on Colorado River
brewbooks:
Tonto Platform
brewbooks:
Tonto Platform
brewbooks:
Tonto Platform
brewbooks:
Heading off Tonto Platform
brewbooks:
Ephedra species
