<p>Apparently they have been inferred to be "220 meters". See the references in:</p>

<p>S. D. Kadel, S. A. Fagents, "TROUGH-BOUNDING RIDGE PAIRS ON EUROPA", , Lunar and Planetary Science XXIX. (<a href="http://www.lpi.usra.edu/meetings/LPSC98/pdf/1078.pdf" rel="nofollow">PDF</a>)</p>

CC BY-SA 3.0
2014-11-27T14:53:43.630Z
I think that the text in your link says that they are on average 220 meters high, and that the ice layer under them is "kilometers to tens of kilometers" thick.
LocalFluff
CC BY-SA 3.0
2014-11-27T13:49:04.900Z
2014-11-28T16:42:39.423Z
2014-11-28T16:42:39.423Z
iantresman
<p>What are the altitude differences in the high resolution part of <a href="https://i.sstatic.net/1GjpQ.jpg" rel="nofollow noreferrer">this image</a> of Europa? </p>

<p><img src="https://i.sstatic.net/1GjpQ.jpg" alt="Ridges on Europa"></p>

<p>How high do those ridges rise over their neighboring valleys? And how large is the area shown in this image?</p>

<p>And are the craters believed to have been formed by impacts or some kind of "eruptions" from below? It looks to me as if the areas which have the most (tiny) craters is on top of and thus newer than the less cratered areas. Well, here and there anyway.</p>

<photography><europa><galileo-probe>
How tall are the "fractured" linear structures on Europa's surface?
LocalFluff
# How tall are the "fractured" linear structures on Europa's surface?

(Asked by: username_0 on 2014-11-27)

What are the altitude differences in the high resolution part of [this image](https://i.sstatic.net/1GjpQ.jpg) of Europa?

![Ridges on Europa](https://i.sstatic.net/1GjpQ.jpg)

How high do those ridges rise over their neighboring valleys? And how large is the area shown in this image?

And are the craters believed to have been formed by impacts or some kind of "eruptions" from below? It looks to me as if the areas which have the most (tiny) craters is on top of and thus newer than the less cratered areas. Well, here and there anyway.

**Tags:** photography, europa, galileo-probe

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## 1 answers

### Answer by username_1 on 2014-11-27. Score: 4

Apparently they have been inferred to be "220 meters". See the references in:

S. D. Kadel, S. A. Fagents, "TROUGH-BOUNDING RIDGE PAIRS ON EUROPA", , Lunar and Planetary Science XXIX. ([PDF](http://www.lpi.usra.edu/meetings/LPSC98/pdf/1078.pdf))

> **Comments:**
> **username_0**: I think that the text in your link says that they are on average 220 meters high, and that the ice layer under them is "kilometers to tens of kilometers" thick.  

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