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Elk Butt Knob Rockshelter

Site ID: 15Br247

Rockshelter
Breathitt
Kentucky Archaeological Survey
Unless specified, we cannot provide site location information.

Summary

​​​​​​​​​​​​​​​​​​​The Elk Butt Knob Rockshelter sits within a high, east-facing sandstone cliffline that overlooks the headwaters of Caney Creek. Archaeologists with Cultural Resource Analysts investigated the site in 2010 prior to a proposed coal mining project.  

The shelter measures 89 feet north-south by 36 feet east-west, and its ceiling is seven feet tall. Large sections of roof fall inside the shelter restricted the area researchers could examine.  Nevertheless, they found intact ancient American Indian cultural deposits that ranged in thickness from 4 to 15 inches. 

The investigation revealed that ancient Indigenous people camped at the shelter for short periods of time over the course of thousands of years. Early Archaic (8000-6000 BC) period hunter-gatherers were the first. Next came Late Archaic (3000-1000 BC) period hunter-gatherers. Then, much later, ancient hunter-gatherer-farmers camped at the shelter during the middle Fort Ancient (AD 1200-1400) period.

Early Archaic Bifurcate Base Cluster spearpoints.

Findings

Evidence for ancient Native use of this shelter included the recovery of diagnostic tools, charred plant remains,​ and stratified cultural deposits. The Early Archaic period occupation is represented by a Thebes (left, A) spearpoint and two Bifurcate Base Cluster spearpoints (above). Brewerton Cluster spearpoints (left, C) documented the site's Late Archaic occupation. In some areas of the shelter, the Late Archaic deposits overlaid the Early Archaic deposits.​

The Fort Ancient component is represented by two arrowheads, including a Type 5 Madison Fine Triangular: Straight Sided example (left, B) and a small hearth. Researchers secured a radiocarbon date of AD 1300 from a charcoal sample taken from these deposits.

Investigations recovered a variety of chipped stone tools in large quantities. Several scrapers and flakes from tool resharpening were recovered from the Early and Late Archaic deposits. These findings suggested that the hunter-gatherer residents used the shelter more intensively and visited it for longer periods than did the Fort Ancient farmers. 

​Analysis of carbonized seeds and nutshell identified hickory and walnut shells, and grape and blackberry/raspberry seeds. Their recovery indicated that ancient Native Americans stayed at this shelter from mid-summer to mid-fall.

Tools: Thebes (A) and two Brewerton Cluster (C) spearpoints; Type 5 (B) Madison Fine Triangular arrowhead.

What's Cool?

Phytoliths Are “Plant Stones"

Researchers carried out a special study to learn more about what the shelter's Fort Ancient period residents ate during their visits. They took soil samples from a Fort Ancient period hearth and examined the samples for plant residues called phytoliths (literally “plant stones"). These rigid structures of silica are formed within certain kinds of plants when the plants take up dissolved silica in ground water.

Phytoliths are microscopic. They range in size from 8 to 100 microns. They come in many shapes and sizes, and they remain after the plant decays. Scientists can identify plant types or even species from phytoliths. Phytoliths come from modern-day plants as well as from food remains of past peoples.

​At Elk Butt Knob Rockshelter, researchers examined the soil samples through a microscope at approximately 400x magnification. They found phytoliths from several different plants: bean pods (Phaseolus spp.), sunflower (Helianthus spp.), and pawpaw fruit (Asimina trilobata). Since Fort Ancient peoples were farmers, it is possible that both the bean pod and the sunflower phytoliths represent domesticated seeds linked to some of the crops these farmers grew. The pawpaw phytolith, however, represents a wild plant.​

Phytoliths come in varying shapes and sizes:  left, pawpaw; center, bean pods; right, sunflower.

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