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# Ghost craters on the Moon!
- URL: https://jatan.space/ghost-craters-on-the-moon/
- Published: 2019-04-22T16:29:41.000Z
- Updated: 2024-02-21T09:16:02.000Z
- Description: Buried below the surface in the Moon's lava.
- Author: Jatan Mehta

Here is a ghost crater, can you see it?

![](https://jatan.space/content/images/2024/02/https-3a-2f-2fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984-s3-amazonaws-com-2fpublic-2fimages-2fe5559431-36d5-4ac1-921a-edf4e3ba893b_1024x1024-png.jpg)

Ghost crater Lambert R, captured from orbit by NASA's Apollo 17\. [Credit: NASA](http://wms.lroc.asu.edu/apollo/view?camera=M&image%5Fname=AS17-M-2286)

A ghost crater is a crater buried in lava, with only the crater rim visible. How do they form? Say a regular crater forms by an asteroid/meteor impact at some point. After that, during the time of active volcanism on the Moon, lava eruptions in the area may fill the crater to the brim, leaving behind just the rim. [Many](http://lroc.sese.asu.edu/posts/608) such [ghost craters](http://lroc.sese.asu.edu/posts/166) have been [spotted](http://lroc.sese.asu.edu/posts/588) on the Moon. My favorite is this one where the crater is fully submerged in lava, but the bright ejecta from the impact is still visible!

![](https://jatan.space/content/images/2024/02/https-3a-2f-2fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984-s3-amazonaws-com-2fpublic-2fimages-2fd276664d-5c0f-4722-a7d5-b3b9e7314dea_1000x1000-png.jpg)

A 650-700 meters ghost crater with visible ejecta. [Credit: NASA Lunar Reconnaissance Orbiter (LRO)](http://lroc.sese.asu.edu/posts/560)

There’s also a [Lunar Kipuka](https://jatan.space/lunar-kipuka/), which is a similar feature. One of the ways scientists know these ghost craters really are craters is by imaging them from orbit at low-sun angles. Their rim, if it is a crater, casts a long shadow in such cases and makes its nature apparent.

More [complex ghost craters have been observed on Mercury](https://en.wikipedia.org/wiki/Ghost%5Fcraters%5Fon%5FMercury) from past missions, decorated with [graben](https://jatan.space/rille-on-a-ridge-rima-ariadaeus/) and ridges. Fascinating stuff.

[KNOW MORE](http://lroc.sese.asu.edu/posts/588)

[![](https://jatan.space/content/images/2024/02/https-3a-2f-2fbucketeer-e05bbc84-baa3-437e-9518-adb32be77984-s3-amazonaws-com-2fpublic-2fimages-2f7ee83716-027d-4882-91d8-d21676c1a14c_1023x768-png.jpg)](https://quickmap.lroc.asu.edu/?extent=-26.1285615,21.5466156,-15.7075495,27.1446118&proj=16&layers=NrBsFYBoAZIRnpEoAsjZwLrc0A)

[EXPLORE ON A MAP](https://quickmap.lroc.asu.edu/?extent=-26.1285615,21.5466156,-15.7075495,27.1446118&proj=16&layers=NrBsFYBoAZIRnpEoAsjZwLrc0A)