It’s like 450 feet long but only 20 feet wide. Could you even build a structure on it? Always looking for storage lots and warehouses but this is just strange.
I bet it was planned as a railway easement.
That went away or never happened and its being auctioned because its worthless.
I think you're right, I remember a railroad crossing near that area in the 90s, it was out of service then and the tracks were later removed.
EDIT: This railroad owns the tracks north of MD 26 and they had plans to rebuild the railway across MD 26 that were cancelled, which is likely why this siding never happened: https://en.wikipedia.org/wiki/Walkersville_Southern_Railroad