February 2026

Fantastic star holes and where to find them You can find star shaped drill holes in alluvial boulders found along rivers. In California, star holes are drilled from up high in the mountain rock, after thousands of years, the star holes become dislodged from cliffs and make their way downstream along rivers and are ejected […]

Star Hole Prospecting (Relic Hunting) Read More »

Star Struck and Star Spangeled Pictured below are 2 star shaped drill holes found in American rock. The precision star holes are proven to be made using ultrasonic technology with a shaped metal tube. The drill holes were made in prehistory. Using common sense and science, we know these machined star holes found here in

A Star is Born Read More »

Pentagonal and Heptagonal shaped drill holes in rock and how they were made in prehistory. In 2017, when I first saw the below ancient 5-point star shaped hole in granite rock, I was confused on how the inward curved sides leading to a sharp point were created. Nothing in my lapidary arsinal at the time

Machined core drill holes with shape Read More »

Shopping Cart