Snow and Ice Residue: Monument's higher elevation leads to more snowmelt carrying salt and road grime into ground-level window tracks.
Heavy Pollen Accumulation: Nearby dense pine and evergreen forests contribute significant amounts of sticky pollen that traps dirt in window tracks.
Altitude-Driven Wear: Rapid temperature shifts at this elevation can cause condensation in tracks, which, when mixed with dust, creates a "mud" that clogs drainage holes.

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