There's an explanation and video[1]; I remember thinking the same a few years ago.

[1] https://www.nasa.gov/feature/jpl/nasas-curiosity-mars-rover-...

Thank you.

That's probably a great example of one of the benefits of these rovers running for so long. They'd never have scheduled something so non-science-oriented if they only got the few weeks they expected, but when your mission exceeds expectations by several thousand percent, you have time for such things.