What is this picture?

Question

What is shown in this image?

Accepted Answer

serpentinite rock surface. # Serpentinite's Hidden Talent

Serpentinite rock is so good at capturing carbon dioxide from the air that scientists are now using it to fight climate change—the rock naturally absorbs CO2 through a process called carbonation, and researchers are figuring out how to speed up this reaction to store greenhouse gases permanently in stone.

Answer: serpentinite rock surface