# The andesite and sandstone blocks were cast in moulds from crushed rock and an organic binder.

> Disputed: The andesite and sandstone blocks were cast in moulds from crushed rock and an organic binder.

Source: https://mysteriesdept.com/mysteries/puma-punku/answers/ANS0D69YK8A2KSK/the-andesite-and-sandstone-blocks-were-cast-in-moulds-from  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Questions](https://mysteriesdept.com/questions)[Puma Punku and Tiwanaku](https://mysteriesdept.com/mysteries/puma-punku)[How were the Puma Punku andesite blocks cut so precisely, and could the Tiwanaku have done it?](https://mysteriesdept.com/mysteries/puma-punku/questions/QST0D69YGJC3BNF/how-were-the-puma-punku-andesite-blocks-cut-so-precisely-and)Answer

Answer · Puma Punku and Tiwanaku

# The andesite and sandstone blocks were cast in moulds from crushed rock and an organic binder.

The andesite and sandstone blocks were cast in moulds from crushed rock and an organic binder.

**Disputed** Answers **1** questionPublished0

## Where it stands

**Disputed** One piece of evidence for, two against. It needs two reviews to be accepted.

## What it predicts

- No igneous or sedimentary texture under the microscope; no geochemical match to any quarry; mould seams, not tool marks.

## What would rule it out

- A geochemical match of the blocks to natural outcrops, and carving marks on the surfaces.

## Evidence 1 for · 2 against

[SEM images were read as showing an artificial matrix with organic matter.](https://mysteriesdept.com/mysteries/puma-punku/evidence/EVD0D69YKG41AD3/sem-images-were-read-as-showing-an-artificial-matrix-with)

Speculative

FOR

[The andesite matches the Ccapia volcano and the sandstone matches Kimsachata, where quarry faces and…](https://mysteriesdept.com/mysteries/puma-punku/evidence/EVD0D69YKQY58K5/the-andesite-matches-the-ccapia-volcano-and-the-sandstone)

Established

AGAINST

[The surfaces carry pecking and grinding marks, not mould seams.](https://mysteriesdept.com/mysteries/puma-punku/evidence/EVD0D69YKZR0XWE/the-surfaces-carry-pecking-and-grinding-marks-not-mould)

Established

AGAINST

## The questions it answers

[How were the Puma Punku andesite blocks cut so precisely, and could the Tiwanaku have done it?](https://mysteriesdept.com/mysteries/puma-punku/questions/QST0D69YGJC3BNF/how-were-the-puma-punku-andesite-blocks-cut-so-precisely-and)

AnsweredNo answer ahead

## Cite it

```
Mysteries Department. (2026). The andesite and sandstone blocks were cast in moulds from crushed rock and an organic binder. [Answer ANS0D69YK8A2KSK]. https://mysteriesdept.com/r/ANS0D69YK8A2KSK
```

Key

**ANS** 0D69YK8A2KSK

Kind

Answer · hypothesis

Origin

Published

Version

1

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