Lumber & Wooden Cells on Mars

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NASA's Mars rover Curiosity took the above images on April 20, 2023 (Sol 3805) with its right-side Mast Camera.

In the above photo, red lines mark lumber on Mars. Blue arrows point to remains of wooden cells in cross section. Green arrows point to protrusion.

For comparison with wooden cells on Earth, see [link to www.flickr.com (secure)]
and [link to www.flickr.com (secure)]