Stone buildings and open courts at Machu Picchu

The illustrated field library

How to read a stone wall

Joints, surfaces and the decisions hidden in ordinary masonry.

Photo creditDiego Delso · CC BY-SA 4.0. Resized for display.

A wall records choices. Its builders selected material, shaped or sorted it, arranged the pieces and solved the problem of openings, corners and changes in level. Looking at an ordinary stretch of masonry can reveal more about construction than concentrating only on its grandest façade.

Start with the joints

Compare the shape and spacing of the stones. Are the courses regular? Do small pieces fill gaps? Can you see mortar? Describe what is visible before reaching for a label such as perfect or primitive. Different parts of the same site may use different techniques because they served different purposes or belong to different periods.

Find the difficult places

Corners, doorways and sloping ground force builders to solve problems. A large, carefully placed block may have a particular structural role. A change in the pattern might indicate an alteration, repair or a different construction phase. A site guide can help distinguish these possibilities.

Agricultural terraces stepping down the mountainside
Agricultural terraces stepping down the mountainsidePhoto: F Delventhal · CC BY 2.0

Read the surface

Tool marks, erosion, lichen and restoration can all affect a stone’s appearance. A smooth surface does not automatically mean that it has remained untouched since construction. Compare documentary photographs and conservation information before making claims about what is original.

Use the ordinary detail

Take a photograph that includes enough surrounding wall to show the arrangement. A close crop of a joint can be attractive but loses context. The most useful pair is often one wider photograph and one detail, with a caption explaining exactly where each was taken.

The monumental façade of the Palace Tomb
The monumental façade of the Palace TombPhoto: Bernard Gagnon · CC BY-SA 3.0

Read further

Original interpretive writing for this project. The linked destination guides provide historical context and their own reference lists.

Take the idea somewhere

The Inca citadel beneath the peak of Huayna Picchu

1 · Peru

Machu Picchu

Follow your booked circuit slowly, pausing where the terraces reveal how the city fits the ridge.

Al-Khazneh, Petra’s celebrated Treasury façade

2 · Jordan

Petra

Walk the Siq to the Treasury, then continue into the city instead of treating the first reveal as the whole visit.

The conical tower inside Great Zimbabwe’s Great Enclosure

150 · Zimbabwe

Great Zimbabwe

Explore the Great Enclosure and, if suitable, the Hill Complex with a knowledgeable guide.