# The probability that a single spiral was designed to mark four dates is very small.

> The probability that a single spiral was designed to mark four dates is very small.

Source: https://mysteriesdept.com/mysteries/chaco-canyon/evidence/EVD0D9KVPNM46QK/the-probability-that-a-single-spiral-was-designed-to-mark  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Great houses of Chaco Canyon](https://mysteriesdept.com/mysteries/chaco-canyon)Evidence

Evidence · Great houses of Chaco Canyon

# The probability that a single spiral was designed to mark four dates is very small.

The probability that a single spiral was designed to mark four dates is very small.

Suggestive0

## What it bears on 1 answer

[The lunar shadow positions are by-products of the slabs' shape; the site was not used to follow the…](https://mysteriesdept.com/mysteries/chaco-canyon/answers/ANS0D9KVP601RTM/the-lunar-shadow-positions-are-by-products-of-the-slabs)

Most likely

FOR

## Cite it

```
Mysteries Department. (2026). The probability that a single spiral was designed to mark four dates is very small. [Evidence EVD0D9KVPNM46QK]. https://mysteriesdept.com/r/EVD0D9KVPNM46QK
```

Key

**EVD** 0D9KVPNM46QK

Kind

Evidence

Tier

Suggestive

Version

1

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