Red Pass Lake defines the southwestern corner of this San Bernardino County landscape, appearing as a dry lake bed or playa characteristic of the Mojave Desert. The terrain is marked by a complex network of ephemeral washes and drainage patterns that flow from the surrounding elevations toward the lower basins. Infrastructure in this sparsely populated region is limited, dominated primarily by the diagonal path of Powerline Rd, which cuts across the southern portion of the quadrangle. This 2012 survey illustrates the stark, utilitarian nature of the desert interior, where human presence is defined more by industrial corridors and topographical markers than by permanent settlements.
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1933 · Avawatz Mountains
USGS Topo · 1:250,000
1947 · Trona
USGS Topo · 1:250,000
1948 · Red Pass Lake
USGS Topo · 1:62,500
1948 · Trona
USGS Topo · 1:250,000
1948 · Cave Mountain
USGS Topo · 1:62,500
1951 · Cave Mountain
USGS Topo · 1:62,500
1951 · Red Pass Lake
USGS Topo · 1:62,500
1953 · Trona
USGS Topo · 1:250,000
1956 · Soda Lake
USGS Topo · 1:62,500
1956 · Baker
USGS Topo · 1:62,500