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Howard Crowhurst pursues the use of multiple squares from being related to horizon events and the inter-related network of megalithic sites around Carnac, to exploring their use as an archetectural grid somewhat explaining how the monuments were laid out and what they mean. Well illustrated.


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by Robin Heath and John Michell

out-of-print but available second hand or new as a repro book called Lost Science of Measuring the Earth: Discovering the Sacred Geometry of the Ancients


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published 2014 by Bluestone Press

see some content of Robin's blog:

Secrets of Carningli Triangle

AstronomyandMeasurement Harris cover 160pxA work within the genre of megalithic science with its own thesis. Much data to consider.

This booklet was strongly influenced by Barnett (1978) and Thom, and proposes a new unit called a megalithic foot (MF) which seems to divide into integral dimensions measured using the megalithic yard so as to obtain astronomical time periods, notably the eclipse year of 346.62 days, yet often times other multiples. Just as Thom was criticised by Neal for documenting sites using a rather variable averaged megalithic yard of 2.72 feet (+/- 0.02), this book gives results in the newly declared MF so that without resort to sources, one cannot verify rather than simply accept what is proposed. 

Back Matter

The great monuments of prehistoric Britain have been a constant source of curiosity and theory since their construction principles were first forgotten, millennia ago.

It has long been argued that the megalith builders used a standard measurement which naturally enough is not the same as any we use today. A number of proposed measurements have been put forward, the best known of which is the Megalithic Yard of Alexander Thom.

Thom 's measure has come under critical study in recent decades. Here the authors suggest a new measurement, a refinement not so far different from Thom's Megalithic Yard, that more satisfactorily accounts for the lay-out of a greater number of our ancient sites

A selection of sites, from stone circles to Ilkley's Swastika Stone, drawn from across the British Isles and Brittany, are presented to illustrate this new hypothesis.

Referred to in Arbor Low articles.

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Barnatt's early work in this book bears no resemblance to his views on YouTube, as Archaeologist for the Peak District National Park. He now says Thom's approach was over-stated, that stone circles offer "too many targets" (a la Jaquetta Hawkes), ancient astronomy was more sensory than exact, and Clive Ruggles and Aubrey Burl (his post-Thom position) had the right approach. However, like many early works, Some Circles of the Peaks indicates a promise which others can take forward towards understanding megalithic science. 

Back Matter

This is a guide book with a difference to one of the most popular tourist areas in Britain. It was the first detailed study of a group of stone circles within a single region and provides a significant new understanding of the relationship between the rings, their builders and the landscape.

Stone circles are amongst the most intriguing and enigmatic relics of our distant past. This book reflects the latest thinking on the original purposes of megalithic circles and considers their astronomical and geometrical functions in the light of recent research.

As well as detailed assessments of megalithic geometry, measurement and astronomical knowledge, STONE CIRCLES OF THE PEAK contains seven itineraries, with accompanying maps and plans, and an in-depth analysis of thirty-six circles. John Barnatt's conclusions will illuminate any visit to the Peak District, but they also show how prehistoric man everywhere combined scientific objectivity with magic and religion in the search for natural harmony. 

Referred to in Arbor Low articles.

by Richard Heath, Inner Traditions (Rochester Va: 2014)

HEATH SacredNumber-LordsofTime 16ANCIENT MYSTERIES

“Heath has done a superb job of collating his own work on the subject of megaliths with the objective views of many other researchers in the field. I therefore do not merely recommend reading this book but can state unequivocally it is a must read.”
--John Neal, British metrologist and researcher and author ofMeasuring the Megaliths and The Structure of Metrology

“In Sacred Number and the Lords of Time we have an important explanation of how megalithic science was developed. This book is a long-overdue wakeup call to a modern culture that has abandoned this fully developed and astonishingly rich prehistoric model of the physical world. The truth is now out.”
--Robin Heath, coauthor of The Lost Science of Measuring the Earth and author of Sun, Moon and Earth

Our Stone Age ancestors discovered that the geometry of the Earth provided a sacred connection between human experience and the spiritual worlds. Exploring the numerical patterns of time and then the size and shape of the Earth, they created an exact science of measures and preserved their discoveries within sacred structures, spiritualized landscapes, and mythologies, which interpreted the religious ideas associated with their science. In this way, the ancient measures of space and time reached our present age and still embody the direct but forgotten truths of our sacred planet.

By recovering the megalithic secrets of space and time, carefully preserved in megalithic stone structures, Richard Heath tells an untold story of four megalithic ages. He identifies a first age of astronomical discovery in the French sites around Carnac, where, using only counted lengths and simple geometries, the ancients created a sophisticated cosmic clockwork. A second age centered in Britain, and including Stonehenge, successfully measured the Earth and revealed a simple pattern held within the Earth’s shape, using metrological ratios. A third age, centered in Egypt and Greece, saw a perfecting of the monumental arts, associated metrology, and religious ideas, revealing the Earth and the heavens as the work of a numerical genius. The fourth age saw pyramids and other metrological buildings spread to the New World, at Teotihuacan in Mexico, and also to the Far East.

Examining Earth’s harmonic relevance to the Universe as a whole, Heath shows how we can recognize the long-forgotten foundations of our own civilization and revive the sacred teaching preserved by the four great megalithic ages.

edited by Iain Morely and Colin Renfrew, CUP: Cambridge, 2010

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by Robin Heath, Bluestone Press: Cardigan, 1998