The latest map (after a few more drives) should give you a clue ;)

https://mars.nasa.gov/maps/location/?mission=M20&site=jez&mapLon=77.30983839922636&mapLat=18.494271101553508&mapZoom=17&globeLon=77.42958068847659&globeLat=18.463327291058505&globeZoom=11&globeCamera=0,-9765.625,0,0,1,0&panePercents=0,100,0&on=Rover Waypoints$1.00,Rover Drive Path$1.00,Sampling Locations$1.00,Surface View$1.00,Helicopter Position$1.00,Flight Test Zone$1.00,Color Basemap$1.00,Grayscale Basemap$1.00,Northeast Syrtis Base Map$1.00