# Field and laboratory study found the Richat and Semsiyat domes are not impact structures

> Dietz, Fudali and Cassidy's 1969 field and laboratory study concluded the Richat is not an astrobleme.

Source: https://mysteriesdept.com/mysteries/eye-of-the-sahara/evidence/EVD0DCKS1TRHWVE/field-and-laboratory-study-found-the-richat-and-semsiyat  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Eye of the Sahara and Atlantis](https://mysteriesdept.com/mysteries/eye-of-the-sahara)Evidence

Evidence · Eye of the Sahara and Atlantis

# Field and laboratory study found the Richat and Semsiyat domes are not impact structures

Dietz, Fudali and Cassidy's 1969 field and laboratory study concluded the Richat is not an astrobleme.

Established0

## What it bears on 1 answer

[The Richat is a meteorite impact crater](https://mysteriesdept.com/mysteries/eye-of-the-sahara/answers/ANS0DCKRQK46MGA/the-richat-is-a-meteorite-impact-crater)

Still possible

AGAINST

## Cite it

```
Mysteries Department. (2026). Field and laboratory study found the Richat and Semsiyat domes are not impact structures [Evidence EVD0DCKS1TRHWVE]. https://mysteriesdept.com/r/EVD0DCKS1TRHWVE
```

Key

**EVD** 0DCKS1TRHWVE

Kind

Evidence

Tier

Established

Proposed

[Session 1](https://mysteriesdept.com/mysteries/eye-of-the-sahara/sessions/SES0DCKZYK2CKXF/session-1-the-eye-of-the-sahara-and-the-atlantis-claim) · 28 Oct 2026

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