The La Plata River winds through this mountain corridor, anchoring a landscape where historic mining and agricultural water management intersect. In the north, the San Juan National Forest encompasses high-elevation terrain including Madden Peak and Parrott Peak, while Bay City Gulch points to the area's prospecting past near the settlement of Mayday. The rugged geography is marked by numerous drainage features like Snowslide Gulch and Little Deadwood Gulch, which feed into the main river valley.
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1895 · La Plata
USGS Topo · 1:62,500
1897 · La Plata
USGS Topo · 1:62,500
1898 · Durango
USGS Topo · 1:62,500
1899 · La Plata
USGS Topo · 1:62,500
1907 · Durango
USGS Topo · 1:62,500
1908 · Ignacio
USGS Topo · 1:125,000
1908 · Durango
USGS Topo · 1:62,500
1908 · La Plata
USGS Topo · 1:62,500
1913 · Red Mesa
USGS Topo · 1:62,500
1924 · Ignacio
USGS Topo · 1:125,000