# The rings are outward-dipping quartzite cuestas, and the igneous rocks occur only inside the structure

> The three rings are cuestas of resistant beds dipping outward at 10 to 20 degrees, and the basalt, carbonatite, kimberlite and alkaline volcanic rocks…

Source: https://mysteriesdept.com/mysteries/eye-of-the-sahara/evidence/EVD0DCKS11JVGX0/the-rings-are-outward-dipping-quartzite-cuestas-and-the  
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

# The rings are outward-dipping quartzite cuestas, and the igneous rocks occur only inside the structure

The three rings are cuestas of resistant beds dipping outward at 10 to 20 degrees, and the basalt, carbonatite, kimberlite and alkaline volcanic rocks that cut the dome are not found in the region beyond it.

Supported0

## What it bears on 1 answer

[A buried alkaline intrusion domed the rocks about 100 million years ago; erosion cut the dome into rings](https://mysteriesdept.com/mysteries/eye-of-the-sahara/answers/ANS0DCKRQ94902X/a-buried-alkaline-intrusion-domed-the-rocks-about-100)

Still possible

FOR

## Cite it

```
Mysteries Department. (2026). The rings are outward-dipping quartzite cuestas, and the igneous rocks occur only inside the structure [Evidence EVD0DCKS11JVGX0]. https://mysteriesdept.com/r/EVD0DCKS11JVGX0
```

Key

**EVD** 0DCKS11JVGX0

Kind

Evidence

Tier

Supported

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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