Wednesday, October 30, 2013

UNM 2013 Fall Field School - Day Seven in Chaco


A Day of Wisdom
By Caitlin Holland
I have never seen so many stars in the sky when I awake before the break of dawn. Billions of stars illuminating the dark sky surrounding a crescent moon over Chaco Canyon. The ruffling of sleeping bags, the unzipping of tent doors and the contemporaneous symphony of alarm clocks illustrate the departure time from the safe boundaries of our camping area to the extensive mesas and pueblos of Chaco Canyon.  A discussion of goals for the day arises while we carry and prepare necessary equipment to the site for excavation as well as site assessment surveys.  Some students continued exposing historic features and structures within the borders of where the Wetherill Homestead and Trading Post used to be located in the early 1900s. Other students were led to the Chetro Ketl agricultural fields, where they received direction on the utilization of remote sensing and GPR (Ground-penetrating radar). 
Remote sensing techniques, such as GPR, allow archaeologists to retrieve exciting data. Particularly for GPR, the radar sends a high frequency of radio waves through the ground that bounce off a buried object or boundary and that signal then goes back to the machine and results in a basic outlay of a map showing the object. This is used to understand what is located beneath the surface of the ground without disturbing the original context of the site(s). While students were becoming familiar with this process, another group of students, me included, were driven up to a site in the South Gap of Chaco to learn how to complete site assessment.
Site assessment is when the National Park Service wants to assess prehistoric and historic sites that were previously recorded by other researchers. The goal is to update the records of each site (maps and notes) based on changes that have occurred through geological, environmental and animal and human impacts. Today we relocated a Basketmaker Period site, where we additionally learned about the process of structure collapse and of ecological adaptations that took place within the area. Strong gusts of wind, rain and a “stampede” of tumbleweeds off in the distance marked the end of our work for the day!
The day was not over yet though, as everyone huddled together at the Wetherill Homestead site to begin a tour of everyone’s excavation units! Many of the units held exposed architecture such as a rock wall, concrete step or a well house. Other units showed remarkable stratigraphic layers of dirt, then ash and organic material, and then sand. Still other units, under closer inspection, showed remnants of other features such as post holes from previous buildings.  From the beginning to the end of the day, wise lessons were acknowledged by all of us; lessons that will provide guidance in the days ahead. These lessons, sometimes masked by everyday events such as trying to retrieve pickles from a jar, are what mean the most to us out here in Chaco and elsewhere: Slow and steady finds the unexpected, and value friendship and guidance when you need it the most.  

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