1.

Only one of these feature types was observed during the study but it was from the same site LA 138517 which was restricted to an Early, Middle, and early Late Archaic occupation. 2.This feature type is rare in the archaeological record but very distinct when compared to the other four feature types delineated as part of this study.  This feature is believed to have been used to grill meat (Thoms 2009). The feature would have been constructed as a layer of adjoining cobbles, typically within a one to two meter diameter area, with a fire built on the surfaceto heat the rocks to a desirted temperature.  Once reached the fire would be cleared off and meat roasted on the feature surface.  Due to the construction of the feature on a surface contents would most likely have been eroded soon after its use.

No charcoal or feature contents were preserved in the example obsaerved suring the scope of this study. However, another example excavated from the Guadalupe foothills west of the Pecos river drainage returned a Middle Archaic carbon assay with a date range between 2770 to 2360 and 2240 to 2180 B.P.  This date is congruent wiht the remains including stratigraphic position of the feature from this study with other Archaic resources at LA 138517.  A photo comparison reveals the two feature to be very similar in form.  The feature from the Gudalupe foothills included approximately 213 cobbles weighing 506 kilograms, within a 2.2 meter area, and the feature form this study including 141 cobbles weighing 472 kilograms at 1.5 meters in diameter.

. 3.

Another example which appears to have been rapidly buried soon after use reveals a single layer of adjoining cobble with charcoal and possible feature contents preserved.  Unfortunately this feature was not subject to an excavation but noted in a creek cutbank during a linear survey for a proposed buried cable and was not subject to an excavation.