Closeup of tracks worn into rock, on old wagon road from Owens Valley and Paradise up to Swall Meadows.  Several layers of wear can be seen on the right, presumably deepened by braking of wheels on downhill trips.
<a href="//commons.wikimedia.org/wiki/User:Dcrjsr" title="User:Dcrjsr">Dcrjsr</a>
CC BY 4.0
<span class="int-own-work" lang="en">Own work</span>