Select Photographs of Peru

Copyright © Christopher Dunn 2011-2012 all rights reserved. May be used for educational purposes with academic credits applied.

The Coricancha in Cuzco

Cultural variations in building styles in Cuzco

Megalithic Stonework along the Pasaje Ahuacpinta

Ancient work next to more recent repairs on the Pasaje Ahuacpinta

Megalithic Precision at Sacsayhuaman

Sacsayhuaman

Sacsayhuaman

Ollantaytambo

Megalithic Granite at Ollantaytambo

Chris Dunn at Ollantaytambo

Machu Picchu

Enigmatic Crypt at Machu Picchu

Select Photographs of Puma Punku in Bolivia

Puma Punku Ruins

Puma Punku Ruins

Puma Punku Ruins

The Back of the Famous H-Blocks at Puma Punku

One of the H-Blocks at Puma Punku

The Angular Geometry of the H-Blocks

The Angular Geometry of an Inset in one of the H-Block Cavities

Angular Geometry of the H-Blocks at Puma Punku

Measuring Instruments used to Measure the Cavities in the H-Blocks

Using Inside Micrometers in one of the Cavities

Working Sketch of the H-Blocks

Marking out Features for Machining the H-Block Model

Machining the Model in a Bridgeport Milling Machine

The Machined H-Block with Hinge Details.

The Hinge Details Installed in the H-Block

A Matte Finish was applied through light sand blasting.

Comparative Cutting Methods of Puma Punku Stone

The following series of photographs were taken as Jay Wakefield, who assisted me in Puma Punku, used my surface gage to inspect the flatness of one of the stones. A lens magnification view was applied to a circle around the dial indicator and is inset near the dial. The movement of the indicator dial around a 360 degree arc was less than the .0005 inch resolution of the dial.

A Precision cut block of lava-stone at Puma Punku

Note the sharp outside and inside corners. Note also the corner where three surfaces meet.