<p>You can find MOLA laser altimeter data here:<a href="https://pds-geosciences.wustl.edu/missions/mgs/megdr.html" rel="nofollow noreferrer">https://pds-geosciences.wustl.edu/missions/mgs/megdr.html</a>.  The files are simple rectangular grids of differences between Martian "sea-level" and measure height at 1/128 degree resolution.  If you have the latitude and longitude, it is quite straightforward to find the height.</p>

<p>To view these files, you probably need the software found here: <a href="https://pds.jpl.nasa.gov/tools/about/pds3-tools/nasa-view.shtml" rel="nofollow noreferrer">https://pds.jpl.nasa.gov/tools/about/pds3-tools/nasa-view.shtml</a> </p>

<p>Looks like the software might be a little out-of-date, but you can give it a try.</p>

CC BY-SA 4.0
2020-02-12T17:25:48.370Z
If you mean the MEGDR Tiled Image Files, my MAC won't let me open those files.  I will have to look for another computer
Bob516
CC BY-SA 4.0
2020-02-12T18:27:57.277Z
@Bob516 - I updated the answer to point to the standard software tools for working with this data.  At one time I had my own tools, so my answer made it sound simpler than it really is...
antlersoft
CC BY-SA 4.0
2020-02-12T16:18:30.257Z
2020-02-12T18:25:37.023Z
2020-02-12T18:25:37.023Z
antlersoft
<p>How can I find the depth of the low lying part of this image of the western part of Valles Marineris?<a href="https://i.sstatic.net/lo8Ft.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/lo8Ft.png" alt="enter image description here"></a></p>

<p>I'm interested in the area northeast of Noctis Labyrinthus, southwest of Tithonium Chasma, north of Oudemans, and west of Ius Chasma.</p>

<p>I couldn't find any contour maps of Valles Marineris or Noctis Labyrinthus </p>

CC BY-SA 4.0
2020-02-13T10:04:52.477Z
Is this your own work or is it possible to cite and/or credit a source?
uhoh
CC BY-SA 4.0
2020-02-13T13:16:22.060Z
A search led me to this image which is on a Pinterest page, https://www.pinterest.com/pin/343892121520269817/?d=t&mt=login#.  The only source for the image was sciences.univ-nantes.fr, a French university.  I didn't know how to navigate a site written in French to find the particular page with this image.
Bob516
CC BY-SA 4.0
2020-02-13T13:18:21.127Z
btw I've just asked [Should questions about specific geographic features on rocky planets in our solar system be on-topic here?](https://astronomy.meta.stackexchange.com/q/567/7982) please feel free to leave a comment or answer! Since you are active on both sites, you may have had a specific reason for posting here instead of there.
uhoh
<mars><topographic-map>
How can I find the depth of a portion of the Valles Marineris?
Bob516
# How can I find the depth of a portion of the Valles Marineris?

(Asked by: username_0 on 2020-02-12)

How can I find the depth of the low lying part of this image of the western part of Valles Marineris?[![enter image description here](https://i.sstatic.net/lo8Ft.png)](https://i.sstatic.net/lo8Ft.png)

I'm interested in the area northeast of Noctis Labyrinthus, southwest of Tithonium Chasma, north of Oudemans, and west of Ius Chasma.

I couldn't find any contour maps of Valles Marineris or Noctis Labyrinthus

**Tags:** mars, topographic-map

> **Comments:**
> **username_1**: Is this your own work or is it possible to cite and/or credit a source?  
> **username_0**: A search led me to this image which is on a Pinterest page, https://www.pinterest.com/pin/343892121520269817/?d=t&mt=login#.  The only source for the image was sciences.univ-nantes.fr, a French university.  I didn't know how to navigate a site written in French to find the particular page with this image.  
> **username_1**: btw I've just asked [Should questions about specific geographic features on rocky planets in our solar system be on-topic here?](https://astronomy.meta.stackexchange.com/q/567/7982) please feel free to leave a comment or answer! Since you are active on both sites, you may have had a specific reason for posting here instead of there.  

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## 1 answers

### Answer by username_2 on 2020-02-12. Score: 5 | Accepted answer

You can find MOLA laser altimeter data here:<https://pds-geosciences.wustl.edu/missions/mgs/megdr.html>. The files are simple rectangular grids of differences between Martian "sea-level" and measure height at 1/128 degree resolution. If you have the latitude and longitude, it is quite straightforward to find the height.

To view these files, you probably need the software found here: <https://pds.jpl.nasa.gov/tools/about/pds3-tools/nasa-view.shtml>

Looks like the software might be a little out-of-date, but you can give it a try.

> **Comments:**
> **username_0**: If you mean the MEGDR Tiled Image Files, my MAC won't let me open those files.  I will have to look for another computer  
> **username_2**: @username_0 - I updated the answer to point to the standard software tools for working with this data.  At one time I had my own tools, so my answer made it sound simpler than it really is...  

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