# The lake is an older thermokarst or river-plain lake unrelated to the event.

> Most likely: The lake is an older thermokarst or river-plain lake unrelated to the event.

Source: https://mysteriesdept.com/mysteries/tunguska-event/answers/ANS0D4ECNGE3RMQ/the-lake-is-an-older-thermokarst-or-river-plain-lake  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Questions](https://mysteriesdept.com/questions)[1908 Tunguska event](https://mysteriesdept.com/mysteries/tunguska-event)[Is Lake Cheko a crater made by a fragment in 1908?](https://mysteriesdept.com/mysteries/tunguska-event/questions/QST0D4ECBG47348/is-lake-cheko-a-crater-made-by-a-fragment-in-1908)Answer

Answer · 1908 Tunguska event

# The lake is an older thermokarst or river-plain lake unrelated to the event.

The lake is an older thermokarst or river-plain lake unrelated to the event.

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

## Where it stands

**Most likely** Its tests partly supported it: one piece of evidence for, none against. It needs two reviews to be accepted.

## What it predicts

- Continuous sediment much older than 1908 at depth.
- No impactor material.

## What would rule it out

- Impactor material or a 1908 base in a full-depth core.

## Evidence 1 for · none against

[Sediment dating shows the lake predates 1908.](https://mysteriesdept.com/mysteries/tunguska-event/evidence/EVD0D4ECNR826KX/sediment-dating-shows-the-lake-predates-1908)

Supported

FOR

## The questions it answers

[Is Lake Cheko a crater made by a fragment in 1908?](https://mysteriesdept.com/mysteries/tunguska-event/questions/QST0D4ECBG47348/is-lake-cheko-a-crater-made-by-a-fragment-in-1908)

Part of [Why have no fragments of the body been found?](https://mysteriesdept.com/mysteries/tunguska-event/questions/QST0D4ECB8A5SWD/why-have-no-fragments-of-the-body-been-found)

Most likelyThe lake is an older thermokarst or river-plain lake unrelated to the event

## Cite it

```
Mysteries Department. (2026). The lake is an older thermokarst or river-plain lake unrelated to the event. [Answer ANS0D4ECNGE3RMQ]. https://mysteriesdept.com/r/ANS0D4ECNGE3RMQ
```

Key

**ANS** 0D4ECNGE3RMQ

Kind

Answer · hypothesis

Origin

Published

Version

1

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