HGS and other photo albums
A group of students from the University of Houston spent the 2009 Spring Break at Big Bend National Park, mapping various areas including Dog Canyon.
The title of the feature presentation for the 2009 HGS Guest Night (April 4, 2009) is:
In Search of the First Americans:Recent Discoveries and the Role of Geology in the Pursuit of the Past.
Here are some slides related to this interesting topic.