Deep, permanent furrows carved into frontier earth that cannot be easily erased - the wagon wheel impressions become fossilized evidence of passage. Blackened edges where fire and repeated passage have scorched the trail marks, creating a dark border around each groove. A continuous line connecting all four leagues as irrefutable proof of complete journey from plains through rivers, mountains, and to the promised land. Variable depth indicating the weight of those who passed - fully-loaded wagons leaving deeper impressions than those who lightened their load to survive.

Rut Reckoning serves as the ultimate proof of passage - survivors whose journey has carved meaningful tracks into the landscape distinguish themselves from those who were abandoned or turned back. It represents the frontier's unforgiving memory, recording every wagon train that passes and ensuring that those who complete the journey leave evidence that cannot be disputed. The depth and continuity of one's ruts prove whether they pressed forward to the promised land or fell behind into the hollow.