Portable Rock Art and Story Stones

'Bird of Bark'

  12,000-Year-old Aboriginal rock art from the Kimberley region, Western Australia https://www.science.org/doi/10.1126/sciadv.aay3922

Ancient Stone Tool Analysis: Prehistoric Projectile Point Identification Physical Characteristics The specimen exhibits clear signs of human modification through controlled flaking techniques. The artifact features: A triangular shape with a pointed tip Bilateral symmetry Distinct flake scars along both edges A tapered base A weathered, light grayish-tan coloration Manufacturing Evidence The tool shows clear evidence of intentional human modification through: Systematic pressure flaking along the edges Controlled removal of flakes to create sharp cutting edges Deliberate shaping to achieve aerodynamic form Fine secondary flaking to refine the edges Tool Classification...

Heat-treated Chert  Lithic Tool - End Scraper Physical Analysis The specimen is a stone tool with distinctive characteristics indicative of human modification. The material appears to be fine-grained sedimentary rock or heat-treated chert, exhibiting a smooth, worked surface. Evidence of Human Modification Flaking Patterns The artifact displays systematic flaking along its edges, creating a characteristic teardrop or elongated shape. The flake scars demonstrate regular patterning consistent with intentional human knapping rather than natural breakage. Working Edges The tool features a curved edge profile with evidence of systematic retouching. The working edge demonstrates careful preparation through pressure flaking techniques. Tool Classification This artifact can be classified as an end scraper, featuring:...

Explore this fascinating prehistoric stone tool featuring distinctive flaking patterns and expert analysis. Discover the craftsmanship behind this ancient artifact, its possible uses, and archaeological significance This specimen represents a well-preserved example of prehistoric stone tool technology, demonstrating skilled craftsmanship in its manufacture. Physical Characteristics The specimen exhibits a reddish-brown coloration and appears to be crafted from dense lithic material, likely chert or jasper. Its elongated, wedge-like shape with a tapered end suggests intentional shaping for specific use. This specialized cutting or scraping implement was discovered on January 11 of 2025 along the high desert eastern plains of Colorado by explorer and curator Colby Fitch of High Plains Lineage of Morrison Colorado.  Manufacturing Evidence Clear percussion flaking along the edges Systematic removal of fla...

Hafted tang projectile points: base, corner-tanged, diagonal corner-tanged, back corner-tanged and mid-back knife tang.  This hafted corner-tanged knife blade  was  discovered in eastern Colorado 

Chipped piece lit up

Dark veined petrified wood spearhead 

 A petrified wood owl featuring an owl pictograph | top-center Portable Rock Art 

Analysis of Tool Marks and Modifications   This dark-colored stone specimen exhibits characteristics that suggest intentional modification by human hands. The elongated shape and systematic flaking patterns are consistent with prehistoric stone tool manufacturing techniques. Physical Characteristics The specimen is an elongated, dark-colored stone with distinct flaking patterns along its edges. The surface shows both weathered and freshly exposed areas, with a distinctive pattern of conchoidal fractures typical of worked stone implements. Evidence of Modification Several features indicate deliberate human modification: Systematic flake removals creating a tapered form Regular edge patterning suggesting controlled knapping Distinctive platform preparation marks Bilateral symmetry indicating purposeful shaping Technical Assessment The artifact displays characteristics consistent with prehistoric blade technology. The length and proportions, combined wit...

Archaeological Stone Analysis: Evidence of Human Modification Archaeological Stone Analysis Physical Characteristics The specimen is a dark-colored stone artifact displaying distinctive curved profiles and angular features. The surface exhibits weathering patterns and mineral deposits consistent with significant age. Evidence of Modification The artifact shows several characteristics of human modification: Systematic flaking patterns along edges Controlled percussion marks Distinctive curved profile Regular surface texturing Surface Analysis The surface displays natural patina development and weathering. No decorative elements or artistic modifications are present, suggesting a purely utilitarian purpose. Conclusions ...

Analysis of Tool Marks and Modifications Physical Characteristics The specimen displays a distinctive reddish-brown coloration with a smooth, weathered surface. It appears to be roughly palm-sized with an elongated, somewhat triangular form. The surface exhibits varying textures from polished to naturally rough areas. Analysis of Modifications Tool Marks and Manufacturing Evidence Several smooth facets suggest intentional grinding or polishing The edges show signs of deliberate shaping through controlled flaking Dark patches may indicate heat treatment or mineral staining Flaking Patterns Systematic removal scars visible along certain margins Controlled edge angles indicate deliberate shaping Overall form appears intentionally worked rather than naturally fractured Surface Features Variable surface textures ranging from polished to natural Presence of both worked and unworked areas Some areas show possible wear from handling or ...

Another New Discovery in Denver, Colorado Physical Characteristics The specimen displays a distinctive leaf-shaped or pointed form with smooth, controlled edges. The reddish-brown coloration appears consistent throughout the surface, with some patination visible. Evidence of Modification Tool Marks The edge analysis reveals systematic, linear patterns along the margins of the object, suggesting controlled removal of material through pressure flaking techniques. The regular, parallel flake scars visible along the edges indicate deliberate shaping. Flaking Patterns Bilateral symmetry in its overall shape Regular, controlled flake removals along both edges A distinct pointed end created through careful reduction Systematic thinning from the center towards the edges...

Detailed analysis of modified petrified bone  This  specimen shows evidence of thermal treatment and artistic modification from prehistoric times. Includes examination of surface features, coloration, and symbolic markings. The specimen shows distinct characteristics that could indicate intentional modification: • Geometric patterns and linear grooves that appear too regular to be natural • Smooth, polished areas contrasting with rougher textures • Strategic placement of carved or incised elements creating visual depth Surface Treatment The golden-yellow surface coloration and texture shows: • Selective polishing and smoothing of specific areas • Deliberate enhancement of natural bone structure • Possible application of mineral pigments or heat treatment to achieve color variation Symbolic Elements Several features suggest intentional artistic modification: • Regular parallel lines and grooves that don’t follow natural bone structure ...