Type of survey: Magnetic gradiometry; Instrument: Geoscan Research FM-36 fluxgate gradiometer; Prospection depth: up to 1.5 m; Sampling interval: 0.5 x 0.5 m; Area surveyed: 40 x 40 m; Date of survey: 8/97.
Comments: This historic stage stop on the Overland Trail
was reportedly burned down with its occupants annihilated by the
Arapahoe in the 1860s. It contained a number of buildings,
corrals, privies, and the Overland Trail trail itself. The
surface contains a littering of historic artifacts from that
period, including a number of large wooden beams preserved by the
arid climate, and a rain of iron debris. The iron introduces a
tremendous amount of noise to the magnetic data, but it also
illustrates pattern. In the second image some of this noise has
been filtered out. Together, these images suggest possible
structures (square corners, linear features, concentrations of
iron), an alignment for the Overland Trail (see resistivity
below), and two massive iron features.
Type of survey: Resistivity; Instrument: Geoscan Research RM-15; Prospection depth: 0.5 m; Sampling interval: 1 x 0.5 m; Area surveyed: 40 x 40 m; Date of survey: 8/97.
Comments: This historic stage stop on the Overland Trail
was reportedly burned down with its personnel anihilated by the
Arapahoe in the 1860s. It contained a number of buildings,
corrals, privies, and the trail itself. The surface contains a
littering of historic artifacts from that period, including a
number of large wooden beams preserved by the arid climate, and a
rain of iron debris. The raw resistivity suggests a number of
highly resistant zones. The second image, created by shadowing
the first, more strongly suggests the linear track of the
Overland Trail and a linear feature (wall?) along the right one-
third of the image that correlates with the large magnetic
features given above.
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