trackless

Etymology

track + -less

adj

1. Not having tracks or paths; untrodden.
   Solitude in trackless deserts, Where locusts, ants, and lizards poorly thrive, 1836, Joanna Baillie, The Bride, Act 1, Dramas 3, page 296
   "You got two feet, Sethe, not four," he said, and right then a forest sprang up between them; trackless and quiet. 1987, Toni Morrison, Beloved
   It had probably at one point been meant for servants to use to go unobtrusively back and forth, but hadn't been used in years; the floor was dusty and trackless. 2015, Ann Leckie, Ancillary Mercy
2. Not following a track.
   What was it that I loved so well about my childhood's home? / It was the wide and wave-lashed shore, the black rocks crowned with foam! / It was the sea-gull's flapping wing, all trackless in its flight, / Its screaming note, that welcomed on the fierce and stormy night! 1838, Eliza Cook, The Waters
3. (of a train etc.) Not running on tracks.
   trackless trolley
4. (of a closed railway) Without any track, after the track has been removed.
   The two structures remain in a remarkable state of preservation, despite finding themselves adrift and trackless in the County Down countryside, after the closure of the station and the line in the 1950s. November 3 2021, Dr Joseph Brennan, “Boxes with functions across the centuries”, in RAIL, number 943, page 59