# The slabs are a natural rockfall and the spirals were carved where its light fell, so the marking is…

> Most likely: The slabs are a natural rockfall and the spirals were carved where its light fell, so the marking is deliberate in the carving but not in…

Source: https://mysteriesdept.com/mysteries/chaco-canyon/answers/ANS0D9KVJ1621H0/the-slabs-are-a-natural-rockfall-and-the-spirals-were-carved  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Questions](https://mysteriesdept.com/questions)[Great houses of Chaco Canyon](https://mysteriesdept.com/mysteries/chaco-canyon)[Was the Fajada Butte spiral made and used as a solar calendar?](https://mysteriesdept.com/mysteries/chaco-canyon/questions/QST0D9KV4BP04RM/was-the-fajada-butte-spiral-made-and-used-as-a-solar)Answer

Answer · Great houses of Chaco Canyon

# The slabs are a natural rockfall and the spirals were carved where its light fell, so the marking is…

The slabs are a natural rockfall and the spirals were carved where its light fell, so the marking is deliberate in the carving but not in the slabs.

**Most likely** Answers **1** questionPublished0

## Where it stands

**Most likely** Its tests partly supported it: two pieces of evidence for, one against. It needs two reviews to be accepted.

## What it predicts

- The slabs match the cliff they fell from and show no tool marks or packing.

## What would rule it out

- Tool marks, shaping or built footings on the slabs.

## Evidence 2 for · 1 against

[A 2020 review treats the slabs and their edges as natural.](https://mysteriesdept.com/mysteries/chaco-canyon/evidence/EVD0D9KVJGT44D0/a-2020-review-treats-the-slabs-and-their-edges-as-natural)

Suggestive

FOR

[A geological assessment found that the slabs could have reached their positions by rockfall.](https://mysteriesdept.com/mysteries/chaco-canyon/evidence/EVD0D9KVJ906P35/a-geological-assessment-found-that-the-slabs-could-have)

Suggestive

FOR

[The discoverers argue that the combined solar and lunar markings are unlikely without some adjustment of the…](https://mysteriesdept.com/mysteries/chaco-canyon/evidence/EVD0D9KVJRM1ZEG/the-discoverers-argue-that-the-combined-solar-and-lunar)

Speculative

AGAINST

## The questions it answers

[Was the Fajada Butte spiral made and used as a solar calendar?](https://mysteriesdept.com/mysteries/chaco-canyon/questions/QST0D9KV4BP04RM/was-the-fajada-butte-spiral-made-and-used-as-a-solar)

Part of [Do the buildings and markers at Chaco encode astronomy?](https://mysteriesdept.com/mysteries/chaco-canyon/questions/QST0D9KTT3J4BBQ/do-the-buildings-and-markers-at-chaco-encode-astronomy)

Most likelyThe site was a sun shrine where the solstices and equinoxes were watched and honoured, not a calendar for…

## Cite it

```
Mysteries Department. (2026). The slabs are a natural rockfall and the spirals were carved where its light fell, so the marking is… [Answer ANS0D9KVJ1621H0]. https://mysteriesdept.com/r/ANS0D9KVJ1621H0
```

Key

**ANS** 0D9KVJ1621H0

Kind

Answer · hypothesis

Origin

Published

Version

1

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