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Almost on every mission the astronauts did some digging, but how deep did they reach? According to this article:

The regolith is generally from 4 to 5 metres thick in mare areas and from 10 to 15 metres in the older highland regions.[3] Below this true regolith is a region of blocky and fractured bedrock created by larger impacts, which is often referred to as the "megaregolith".

So did they ever see what was beneath the regolith?

Deer Hunter
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symbiotech
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1 Answers1

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So did they ever see what was beneath the regolith?

No. The Apollo program sent a deep core drill ("deep": 3 meters) on Apollo 15, 16, and 17. The deepest sample was 292 centimeters during Apollo 17.

See Apollo 17 Samples 70001 to 70006 Deep Drill Core for details on the sample.

David Hammen
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