This data layer was created by the City of Unalaska Department of Public Works. The source of the data is unclear, but it appears some areas were digitized from transportation photos, some traced on the City of Unalaska's aerial photography, or derived from input and institutional knowledge from staff at the Department of Public Works. Material (rock, mud, snow), Date, and nearby Road are among the fields listed in the attribute data. The data is maintained by the City of Unalaska Department of Public Works.<\/SPAN><\/P><\/P>
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